Buy the TOPPING LA90 at Apos Audio

Unleash Your Music's Full Potential

Power amplifiers are a noisy bunch in more ways than one. Obviously they produce a lot of good noise when they’re amplifying speakers, but they also produce a lot of bad noise, too, in the form of THD+N (total harmonic distortion + noise). This bad noise sounds like a hissing sound when you pause the music and turn the volume of the speakers up.

Historically, audiophiles have understood that with great power comes with great responsibility, er, great noise. A typical power amplifier will have a THD+N of anywhere between 0.0008% and 0.01%. But what if that were all about to change?

The TOPPING LA90 is a power amplifier that’s quite frankly changing the game. It boasts a THD+N of 0.00007%--which is as low as some DACs!–yet still keeps the power flowing to the tune of 110W x 2 @4Ω.

Blink blink.

Yeah. That’s powerful. And…basically noiseless. We’re all ears.

Product highlights

  • 110W x 2 @4Ω 
  • 0.00007% THD+N
  • 140dB SNR
  • 2-step gain setting
  • Built-in heat sink
  • Mono and stereo modes
  • 3 x XLR / TRS inputs

Head on over to the TOPPING LA90 product page, and if you need more information please contact our dedicated Support Team via live chat online or email us at

As with all purchases, when you buy from us you get the Apos Promise for Free Priority Shipping, an Extended 2-Year Warranty, a 45-Day Return Policy, and our 30-Day Lowest Price Match.