{"product_id":"apos-certified-toppping-a30-pro-desktop-headphone-amp","title":"TOPPING A30 Pro Desktop Headphone Amp (Apos Certified)","description":"\u003ch1 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003ePower, performance, and practical new features\u003c\/b\u003e\u003c\/h1\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBoasting six times the power, double the inputs, and massive gains in SNR and THD+N over the original (not to mention some practical new features), the A30 Pro is an excellent choice for the modern music lover looking for an amp that can do it all. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eSix watts per channel\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eThe TOPPING A30 Pro outputs 6,000 milliwatts per channel at 16Ω, 5,500 milliwatts per channel at 32Ω, and 840mw per channel at 300Ω. With can-rattling wattage like that, it can easily power notoriously hard-to-drive full-size headphones like the\u003c\/span\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/apos.audio\/blogs\/news\/sennheiser-hd-660-s-reviews-compendium?_pos=1\u0026amp;_sid=78e84c250\u0026amp;_ss=r\" data-mce-href=\"https:\/\/apos.audio\/blogs\/news\/sennheiser-hd-660-s-reviews-compendium?_pos=1\u0026amp;_sid=78e84c250\u0026amp;_ss=r\"\u003e \u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSennheiser HD 660 S\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e and the\u003c\/span\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/apos.audio\/blogs\/news\/beyerdynamic-dt-1990-pro-reviews-compendium?_pos=1\u0026amp;_sid=2f1919f2b\u0026amp;_ss=r\" data-mce-href=\"https:\/\/apos.audio\/blogs\/news\/beyerdynamic-dt-1990-pro-reviews-compendium?_pos=1\u0026amp;_sid=2f1919f2b\u0026amp;_ss=r\"\u003e \u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBeyerdynamic DT1990 Pro\u003c\/span\u003e\u003c\/a\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003e145dB dynamic range\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eThanks to its NFCA-based circuit and UHGF (ultra high gain feedback) technology, the A30 Pro delivers a stunning 145dB of dynamic range. This means that 145dB exists between the lowest and highest volumes of sound it can reproduce, resulting in exceptionally realistic playback. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eSay goodbye to ground loop noise\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eWhen multiple pieces of equipment are used in conjunction, ground loop noise can occur. Ground loop noise most often manifests as a buzzing or humming sound, which is capable of being loud enough to damage speakers. Although it's known to happen most often in single-ended feeds, it can happen in balanced feeds, too. \u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eThe A30 Pro solves this issue with a GND\/LIFT switch. When in normal use, set the switch to GND. If you encounter ground loop noise, set the switch to LIFT, which will change the ground point of the A30 Pro from its chassis to the equipment it’s connected to, eliminating the noise. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eSingle-ended and balanced input passthrough\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eWhen powered down, the A30 Pro passes the input signal directly through to RCA or TRS without applying amplification. This allows you to connect active monitors to the A30 Pro and get the benefits of an outboard DAC without introducing another amp into the chain. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eThree-step gain switch \u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eA three-step gain switch adapts the A30 Pro to the huge sensitivity gap between IEMs and full-size headphones. From -14dB on the low setting to +14dB on the high setting, the function spans an impressive 28dB. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch2 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eMade to pair with the D30 Pro Desktop DAC\u003c\/b\u003e\u003c\/h2\u003e\n \u003cp data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eThe A30 Pro and D30 Pro share the same spatial dimensions, making them easily stackable. At a combined 4” of height, they’re modest enough to fit under a monitor, in a desk compartment, or on a space-restricted shelf. Get them in black, silver, or mix and match for a more eye-catching dynamic. \u003c\/span\u003e\u003c\/p\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eProduct highlights\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e6W x 2 @ 16Ω output power\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBypass output when power off\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBalanced input\/output\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e3 Outputs: 4-pin XLR, 4.4mm, 6.35mm\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eTHD+N: \u0026lt;0.00006%\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eNoise: \u0026lt;0.3uVrms\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003ePower: 100-240VAC 50Hz\/60Hz\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eGain switch: Low (-14dB), Medium (0dB), High (+14dB)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e3 Inputs: XLR (L+R), RCA (L+R)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003ePassthrough outputs: 6.35mm TRS (L+R), RCA (L+R)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003ePower consumption: \u0026lt;9W\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eOutput power: \u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e6W x2 @ 16Ω THD+N \u0026lt;0.1%\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e5,500mW x2 @ 32Ω THD+N \u0026lt;0.1%\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e840mW x2 @300Ω THD+N \u0026lt;0.1%\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eTHD+N @1kHz A-wt\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: \u0026lt;0.00007% @ 3.5W (32Ω), \u0026lt;0.00006% @ 90mW (300Ω)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: \u0026lt;0.00007% @ 3.2W (32Ω), \u0026lt;0.00006% @ 86mW (300Ω)\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eTHD @ 20-20,000Hz 90kBW\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: \u0026lt;0.00008% @ 760mW (32Ω), \u0026lt;0.00007% @ 81mW (300Ω)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: \u0026lt;0.00008% @ 760mW (32Ω), \u0026lt;0.00007% @ 81mW (300Ω)\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSNR @ MAX OUT 1kHz A-wt\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: 145dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: 140dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSNR @50mV OUT 1kHz\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: 104dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: 104dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eDynamic range @1kHz A-wt\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: 145dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: 140dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eFrequency response\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: 20-40,000Hz (±0.05dB)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: 20-40,000Hz (±0.1dB)\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eOutput level\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: 34Vpp @ low gain, 34Vpp @ medium gain, 45Vpp @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: 6.6Vpp @ low gain, 34Vpp @ medium gain, 45Vpp @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eAP measured noise level @A-wt\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: \u0026lt;0.7uVrms @ low gain, 0.7uVrms @ medium gain, 1.2 uVrms @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: \u0026lt;0.7uVrms @ low gain, \u0026lt;0.7uVrms @ medium gain, \u0026lt;1.2 uVrms @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eActual noise level\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: \u0026lt;0.3uVrms @ low gain, \u0026lt;0.3uVrms @ medium gain, \u0026lt;0.9uVrms @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: \u0026lt;0.3uVrms @ low gain, \u0026lt;0.3uVrms @ medium gain, \u0026lt;1.1uVrms @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eChannel crosstalk @1kHz\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: -106dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: -101dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eIMD CCIF @(18kHz+19kHz)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: -116dB\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: -116dB\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eIMD SMPTE @(60Hz+7kHz)\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: -110dB@SMPTE4: 1, -115dB@SMPTE1: 1\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: -110dB@SMPTE4: 1, -116dB@SMPTE1: 1\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eInput sensitivity \u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: 60Vrms @ low gain, 12.6Vrms @ medium gain, 2.7Vrms @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: 12.7Vrms @ low gain, 12.7Vrms @ medium gain, 2.7Vrms @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eGain\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: -14dB @ low gain, 0dB @ medium gain, 14dB @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: -14dB @ low gain, 0dB @ medium gain, 14dB @ high gain\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eOutput impedance\u003c\/span\u003e\u003c\/li\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eSE IN: \u0026lt;0.1Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eBAL IN: \u0026lt;0.1Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eAdapter impedance: \u0026gt;8Ω\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003ci data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eManufacturer’s note: The actual noise level is obtained by boosting the noise of the A30 Pro by 40dB using a low noise amplifier in front of the APx555B and then dividing the measured noise by 100 times. \u003c\/span\u003e\u003c\/i\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eWeight: 1.9lbs (870g)\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eDimensions: 6.85 x 5.4 x 1.7” (17.4 x 13.8 x 4.5cm)\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eWhat’s included\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eA30 Pro\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eAC cable\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e6.35mm to 3.5mm adaptor\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eUser manual\u003c\/span\u003e\u003c\/li\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eWarranty card\u003c\/span\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3 data-mce-fragment=\"1\"\u003e\u003cb data-mce-fragment=\"1\"\u003eWhat pairs well\u003c\/b\u003e\u003c\/h3\u003e\n \u003cul data-mce-fragment=\"1\"\u003e\n \u003cli data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/apos.audio\/collections\/brand-spotlight-topping\/products\/topping-d30-pro-desktop-dac\" data-mce-href=\"https:\/\/apos.audio\/collections\/brand-spotlight-topping\/products\/topping-d30-pro-desktop-dac\"\u003e\u003cspan data-mce-fragment=\"1\" style=\"font-weight: 400;\" data-mce-style=\"font-weight: 400;\"\u003eTOPPING D30 Pro Desktop DAC\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cstrong\u003eFeatured reviews\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n \u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/zyOp5dWERK8\" width=\"560\" height=\"315\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\"Holy balls.\" -Z Reviews\u003c\/em\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/vMmZh2hwKko\" title=\"YouTube video player\" width=\"560\" height=\"315\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n \u003cstyle type=\"text\/css\"\u003e\u003c!--\n td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}\n --\u003e\u003c\/style\u003e\n \u003cp\u003e\u003cem\u003e\"Noiseless...ultra-detailed...an amazing value.\" -SoundNews\u003c\/em\u003e\u003cbr\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/W9KqV2Q0kBE\" width=\"560\" height=\"315\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n \u003cstyle type=\"text\/css\"\u003e\u003c!--\n td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}\n --\u003e\u003c\/style\u003e\n \u003cp\u003e\u003cem\u003e\"Clean...transparent...every detail is properly reproduced.\" -Tharbamar\u003c\/em\u003e\u003cspan data-sheets-userformat='{\"2\":769,\"3\":{\"1\":0},\"11\":4,\"12\":0}' data-sheets-value='{\"1\":2,\"2\":\"A30: \\\"Clean...transparent...every detail is properly reproduced.\\\" D30: \\\"Nice attack on bass...well-controlled...clean definition across frequency range.\\\" \"}' style=\"font-size: 10pt; font-family: Arial; font-style: normal;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n \u003cp\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/IeChpldgcO4\" title=\"YouTube video player\" width=\"560\" height=\"315\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n \u003cstyle type=\"text\/css\"\u003e\u003c!--\n td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}\n --\u003e\u003c\/style\u003e\n \u003cp\u003e\u003cem\u003e\"This is my absolute recommendation at $400.\" -ChiFi Audio Reviews\u003c\/em\u003e\u003cspan style=\"font-size: 10pt; font-family: Arial; font-style: normal;\" data-sheets-value='{\"1\":2,\"2\":\"\\\"This is my absolute recommendation at $400.\\\" \"}' data-sheets-userformat='{\"2\":769,\"3\":{\"1\":0},\"11\":4,\"12\":0}'\u003e\u003c\/span\u003e \u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/QrF4C3Th_iA\" width=\"560\" height=\"315\" allowfullscreen=\"\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n \u003cp\u003e\u003cem\u003e\"TOPPING's done it again!\" -Steve Guttenberg\u003c\/em\u003e\u003c\/p\u003e","brand":"TOPPING","offers":[{"title":"Black","offer_id":46878631526575,"sku":"APS-AC-0438-1-LN","price":244.3,"currency_code":"USD","in_stock":true},{"title":"Silver","offer_id":46878631559343,"sku":"APS-AC-0438-2-LN","price":244.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0734\/6415\/2239\/files\/apos-audio-topping-headphone-amp-topping-a30-pro-desktop-headphone-amp-apos-certified-refurbished-1150740628.jpg?v=1778011773","url":"https:\/\/freshized.com\/products\/apos-certified-toppping-a30-pro-desktop-headphone-amp","provider":"Freshized","version":"1.0","type":"link"}