Using the latest DSP chip with ST high-power amplifier chip, carefully designed and debugged, its distortion is as low as 0.0008%; The amp is made in an aluminum case, it feels sturdy and beefy. The front of the amp has a mirror front and the volume controller has a dual function (volume and selector). When you press a few seconds on it , it powers ON / OFF. The amps also comes with a remote control.

bits resolution is really not much to ask of modern DACs these days and the graphs basically look like they're layered on top of each other with minuscule variations. Notice that the only mentionable difference is that DACs do have slight frequency response variations, but even this is less than 1dB difference up at 20kHz (and often this is a reflection of the filter selected). SNR ..........................................................................................................103dB SABAJ A30a Power Amplifier 200W*2 Axign AX5689 XU208 DSD512 Bluetooth LDAC Apt-X HD AAC For Passive Speaker & Active Subwoofer Build quality is definitely a step up vs some smaller/cheaper Aiyimas I've been messing with lately. Well, at least fit and finish - I can't comment on the internals. This is my second amp based on this chip. I had already reviewed a fully symmetrical dual Mono MA12070 that I had built a few months ago.

Bluetooth 5.0

aptX-HD ..........................................................................24bit/48 kHz_576kbps aptX .............................................................................16bit/44.1 kHz_352kbps

Channel separation ...................................................................................108dB The color display screen and user-friendly operating system are easy to understand, equipped with full-function remote control function; Channel separation .....................................................................................90dB So, I'm very happy so far! I'd love to know how this measures. Or maybe not, 'cause I'll be slightly sadder if it bombs.Since I own almost all TPA325X in the market and some Hypex Ncore and Purifi at home, I can tell you that it is pretty good even very good in comparison ... for the little that I have heard. Anyway, no noise, no hiss, no distortion BUT I have not even gone close to turning it up anywhere near max (apartment). AAC ..............................................................................16bit/44.1 kHz_320kbps Built-in multiple EQ modes and high/bass adjustment functions to easily match various speakers and music; Subwoofer output level..............................................................................2Vrms

Low pass cutoff frequency...................................................................70~200Hz Just received the new Sabaj A20. This a brand new class D amp made with a dual Infineon Merus MA12070 and fully balanced.All aluminum alloy CNC processing technology, using anodizing technology, fine workmanship, first-class touch; Since I'm basically "throwing the book" of measurements at this device, we can see that certain characteristics are the result of the ESS DAC chip itself. For example the "hump" (THD and IMD) between -45 to -25dBFS or so, and the sinusoidal pattern of odd harmonic distortions when examined in very close detail with 0.1dB steps using a low-noise notch filter. Overall, this is a phenomenal performance level for a modern PCM DAC for both RCA and XLR line-level outputs. Notice that I've turned on the "Peak" tracing as well to capture the highest values across the 8-average readings. Not unusual to see some 60Hz mains hum with harmonics getting into the measurements with unbalanced connections. We're basically looking at -110dB RCA and -120dB XLR noise floor and distortions otherwise.

Bluetooth specification...................................................................................5.0 THD+N ...................................................................................................0.004%Weight ..........................................................................................3.3kg/7.28lbs I listened to the amp with my favorite Audiophile Playlist for 1 hour yesterday, it is really impressive @ first listening. Seems promising in relation to its ration performance / price. USB transmission ....................................................................Asynchronization THD+N ................................................................................................0.0008% A large number of audiophile-grade audio components are used to enhance the subjective sense of hearing;