Topping LA90 Power Amplifier

Topping LA90 is a super powerful device that drives enough juice to power even the demanding speaker setups. It also supports mono mode outputting powerful driving force with ultra-low distortion.

 

The new Topping LA90 has a build with a CNC machined aluminium frame. The amplifier has an in-built giant heat sink on both sides that provides fast and reliable heat dissipation for the amplifier circuit.

Topping has designed the amplifier circuit of the LA90 to achieve ultra-low distortion and high SNR ratings while driving powerful loads. The amplifier achieves as low as 0.00009% THD+N ratings @ 4Ω of load. The LA90 maintains this low distortion, when in Mono mode this even gets lowered to as low as 0.00001%.

The Topping LA90 can be used as a stereo two-channel amplifier or as a high-power mono amplifier. In the Mono mode, it is recommended to use 8Ω and above impedance loads. The stereo mode supports 4Ω and above impedance loads. In the mono mode, the THD+N Distortion value is further lowered.

Compatible with both the XLR and the TRS interfaces, the Topping LA90 has three different input ports. These inputs can be switched easily as required.

In stereo mode, LA90 outputs up to 110W@4Ω of load and in Mono mode, it provides up to 220W@ 8Ω of load. These numbers are extremely good, these reflect the LA90 can power most speaker setups in the industry. It has two level gain settings with +6.7dB gain in Low-Gain mode and +19dB in the high gain mode.

You can connect a pre-amp to the LA90 and bypass the volume control of the LA90. This is especially useful when you are synchronizing the volume of two LA90 power amplifiers in mono mode via a dedicated pre-amplifier. If you want to have a headphone amplifier too in the chain, you can connect it with A90, where A90 will act as a pre-amplifier for the LA90.

Features

  • Powerful output.
  • Stereo & Mono operation modes.
  • Rock-solid build.
  • Giant heat sink.
  • Ultra-low distortion at high-output power.
  • Three sets of Balanced inputs(Compatible with XLR and TRS).
  • Easily Selectable Inputs.
  • Clean background with 140dB SNR.
  • Dual-level gain settings.

Specs

Stereo Mode

  • THD+N: <0.00009%@4Ω, <0.00009%@8Ω.
  • SNR: 140dB.
  • Dynamic Range: 140dB.
  • Frequency response range: 20Hz-40kHz.
  • Output level: 51Vpp@4Ω, 58Vpp@4Ω.
  • Noise: <2.0uVrms(Low gain), <3.5uVrms(High gain).
  • Channel Crosstalk: -138dB.
  • Input Sensitivity: 6.9Vrms(Low gain), 2.2Vrms(High gain).
  • Gain: 9.5dB(Low gain), 19.2dB(High gain).
  • Channel Balance: 0.2dB.
  • Output Impedance: <3mΩ.
  • Output Power: 110Wx2@4Ω THD+N <10%, 90Wx2@4Ω THD+N <1%, 63Wx2@8Ω THD+N <10%, 50Wx2@8Ω THD+N <1%.
  • Load Impedance: ≥4Ω.

Mono Mode

  • THD+N: <0.00001%@8Ω.
  • SNR: 142dB.
  • Dynamic Range: 142dB.
  • Frequency response range: 20Hz-40kHz.
  • Output level: 98Vpp@4Ω.
  • Noise: <2.8uVrms(Low gain), <5.0uVrms(High gain).
  • Input Sensitivity: 6.9Vrms(Low gain), 2.2Vrms(High gain).
  • Gain: 15.5dB(Low gain), 25.2dB(High gain).
  • Output Impedance: <5mΩ.
  • Output Power: 220Wx2@8Ω THD+N <10%, 180Wx2@8Ω THD+N <1%.
  • Load Impedance: ≥8Ω.

Price: 899$