Topping LA90 Power Amplifier

Topping LA90 Power Amplifier

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Key info

  • 110W X 2 @ 4 Ohm
  • 3 X XLR/TRS Input
  • Functions as pure power amplifiuer
  • Ultralow distortion
  • Two step gain settings

All specifications

Physical characteristics
Dimensions (HxWxD) 9.0 x 20.5 x 22.00 cm
Technical specifications
Frequency response Stereo 20Hz-40kHz (±0.2 dB) 10Hz-100kHz (±0.1 dB) | Mono 20Hz-40kHz (±0.2 dB) 10Hz-100kHz (±0.1 dB)
Gain Stereo 9.5dB @G=L 19.2dB @G=H | Mono 15.5dB @G=L 25.2dB @G=H
Dynamic range Stereo 140dB @A-wt | Mono 142dB @A-wt
Channel balance Stereo 0.2dB | Mono -
Outputs Stereo < 3mΩ | Mono < 5mΩ

The come back of linear amplifier

New LA90 is breaking new ground. It reaches a new level of pristineness and accuracy. The unprecedented level of performance will bring you tTopping-LA90he absolute amaze on the sound quality. The background doesn’t get any darker than this. The sound doesn’t get any clearer than this.

Rock solid

The LA90 adopts a high-precision CNC-machined all-aluminum housing, providing the product with exquisite details and solid protection. The built-in giant heat sink provides reliable and fast heat dissipation for the LA90’s amplifier circuit.

Low distortion
while outputting high power

The typical THD + N of LA90 is 0.00007%@8Ω10W, 0.00008%@4Ω20W.
This already as low as an excellent DAC. It means a more accurate reproduction of the music source. The LA90 has a very wide working range with low distortion under load. Even in the commonly used 4Ω load 1W-60W output and 8Ω load 1W-40W output, the LA90 can control the distortion around 0.0001%.

Three sets of balanced inputs,
compatible with XLR and TRS interfaces

Mono mode and Stereo mode

The LA90 can be configured in a common stereo two-channel mode, or can be configured in a high-power mono mode. When using mono mode, the minimum load is 8Ω.

You can control the volume on LA90, or set to bypass the volume control of LA90, then you can use a better pre-amplifier for volume control. This is especially useful when synchronizing the volume of two LA90 in mono mode.

Cable connection for Mono mode:

1. Set to Mono mode.

2. The gray input and output ports in this picture will not be available in Mono mode.

3. Short the negative terminals of the L and R speaker outputs of both LA90 (pictured).

4. Only for 8Ω or higher load.

When used as pure power amplifier, Pre90 The LA90 can be used with the D90SE DAC, which is almost the lowest distortion DAC + amplifier combination.

When used as pure power amplifier, Pre90 pre-amplifier is recommended. The Pre90 brings better volume control, remote control, more inputs, and a high-power combination of 1x Pre90 + 2x LA90 can easily be achieved.

When a headphone amplifier is required at the same time, it is recommended to use LA90 with A90 or A90 Discrete. They not only provide the headphone amplifier, but also can be used as a pre-amplifier for the LA90. It is worth mentioning that, the A90 Discrete also supports remote control and input expansion.

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