Key Features
- Flagship Class AB power amplifier
- 66W at 8 ohm load in stereo mode or 220W at 8 ohms in mono mode
- High current discrete output circuit for higher bridging power
- High-precision CNC machined all-aluminium enclosure
- Three sets of balanced inputs for XLR or TRS
Topping LA90 Discrete Class AB Power Amplifier, Silver Overview
The Topping LA90 Discrete Class AB Power Amplifier is a flagship amp with newly developed discrete NFCA technology. It can be configured in stereo or mono mode, with the ability to control its own volume and utilise two-step gain settings. Connect via the three provided balanced inputs with XLR or TRS interfaces.
With a THD+N of less than 0.0001 per cent, the LA90 Discrete reproduces music sources with exceptional accuracy. Its wide working range and low distortion under load make it suitable for various setups. Moreover, the amplifier's high-precision CNC machined all-aluminium enclosure not only aids in the exquisite sonic detail but also offers reliable and fast heat dissipation for greater protection.
Topping recommends pairing the LA90 Discrete with the D90SE DAC for the ultimate low-distortion combination. Alternatively, the Pre90 pre-amplifier makes a great partner when using LA90 Discrete as a pure power amplifier. For integration with a headphone amplifier, pair with the A90 Discrete for both headphone- and pre-amplification functionality.
Product Ref: 260872
Full Description
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What's in the Box?
- LA90 Discrete
- AC to DC power adapter
- AC cable
- Jumper cable
- User manual
- Warranty card
Specifications
General
| Box dimensions (W x D x H) | 46 x 41 x 23 cm |
|---|---|
| Box weight | 6.2kg |
| Product weight | 2.75kg |
| Product code | TOP-LA90D-S |
Technical
| THD+N @1kHz (A-wt) | Stereo: <0.0009 @4 ohms 5W, <0.0009 @8 ohms 5W Mono: <0.0002 @4 ohms 5W, <0.0001 @8 ohms 5W |
|---|---|
| THD+N @20-20kH 90kGw (No-wtw) | Stereo: <0.0005 @4 ohms 5W, <0.0003 @8 ohms 5WMono: <0.0007 @4 ohms 5W, <0.0005 @8 ohms 5W |
| SNR @A-wt | Stereo: 141dBMono: 143dB |
| Dynamic range @A-wt | Stereo: 141dBMono: 143dB |
| Frequency response | Stereo: 20Hz-40kHz (±0.2dB), 10Hz-100kHz (±0.4dB)Mono: 20Hz-40kHz (±0.2dB), 10Hz-100kHz (±0.4dB)< |
| Output level | Stereo: 51Vpp @4 ohms, 58Vpp @ 8 ohmsMono: 80Vpp @4 ohms, 106Vpp @8 ohms |
| Noise @A-wt | Stereo: <1.8uVrms @G=L, <3.4uVrms @G=HMono: <2.5uVrms @G=L, <4.8uVrms @G=H |
| Channel crosstalk @1kHz | Stereo: -138dBMono: - |
| Input sensitivity | Stereo: 7.3Vrms @G=L, 2.2Vrms @G=HMono: 6.9Vrms @G=L, 2.2Vrms @G=H |
| Gain | Stereo: 9.4dB @G=L, 19.4dB @G=HMono: 15.4dB @G=L, 25.4dB @G=H |
| Channel balance | Stereo: 0.2dBMono: - |
| Output impedance | Stereo: <3m ohmsMono: <5m ohms |
| Output power | Stereo: 120W x 2 @4 ohms THD+N <10 , 100W x 2 @4 ohms THD+N <1 , 66W x 2 @8 ohms THD+N <10 , 56W x 2 @8 ohms THD+N <1 Mono: 180W x 1 @4 ohms THD+N<1 , 220W x 1 @8 ohms THD+N<10 , 180W x 1 @8 ohms THD+N<1 |
| Load impedance | Stereo: ≤4 ohmsMono: ≤4ohms |
The above data is the result of testing in the TOPPING laboratory under AC220V 50Hz condition.
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