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The Topping PA7 Plus is a powerful amplifier, based on a Class D architecture and benefiting from an intelligent and particularly careful design. It is thus capable of developing a significant power while maintaining a very low level of distortion. The technologies used ensure a clear, precise and deep sound reproduction. In addition, the balanced structure of the PA7 Plus provides effective transmission noise reduction.
PA7 Plus
PA7
Output power
2*245W @ 4Ω, THD+N < 1%
2*135W @ 8Ω, THD+N < 1%
2*200W @ 4Ω, THD+N < 1%
2*125W @ 8Ω, THD+N < 1%
SNR
124dB
123dB
Dynamic range
124dB
123dB
Input sensitivity
Single-ended: 2Vrms
Balanced: 4Vrms
Single-ended: 1.9Vrms
Balanced: 3.8Vrms
Output level
90Vpp @ 4Ω
91Vpp @ 8Ω
83Vpp @ 4Ω
89Vpp @ 8Ω
The PA7 Plus's performance in terms of distortion is close to that of a very good DAC. It always remains extremely low before clipping, ensuring a constant reproduction quality whatever the volume level.
The PA7 Plus, despite its compactness, is capable of delivering a significant power. It will indeed be able to deliver no less than 2x245W under 4Ω (1% THD+N) or 2x135W under 8Ω (1% THD+N). It is thus capable of powering greedy audio systems without difficulty while offering a beautiful dynamic.
The Topping PA7 Plus provides a double input connector. There is an XLR / Jack 6.35mm TRS combo for balanced transmission and a stereo RCA input for single-ended transmission.
The Topping amplifier has a volume control. It is however possible to bypass this control to use the PA7 Plus as a power amplifier, by associating an external preamplifier (not supplied).
Equipped with a 12V trigger input, the PA7 Plus can be connected to other devices to take advantage of an automatic on/off function of the system set up.
" Even though the PA7 Plus is based on a commercial amplifier IC, it is clearly that significant engineering optimizations have gone into the design to produce such a low noise and distortion amplifier. The package is excellent and power supply quite hefty to enable very high power output (nearly 400 watts combined at 4 ohm!). I am happy to add Topping PA7 Plus to my recommend list. "
Technical characteristics
Specifications | |
---|---|
Product type | Amplifier |
Amplification type | Class D |
Inputs | 1* Balanced stereo XLR/TRS combo 1* Single-ended stereo RCA |
Output | Speaker outputs |
Measurements | ||
---|---|---|
Single-ended | Balanced | |
THD+N @ 1kHz (A-weighted) | < 0.0005% @ 4Ω, 20W < 0.0004% @ 8Ω, 20W | < 0.0004% @ 4Ω, 20W < 0.0003% @ 8Ω, 20W |
THD+N @ 20kBw (No-weighted) | < 0.009% @ 4Ω, 20W < 0.004% @ 8Ω, 20W | < 0.009% @ 4Ω, 20W < 0.004% @ 8Ω, 20W |
SNR @ Max out, 1kHz (A-weighted) | 124dB | 127dB |
Dynamic range @ 1kHz (A-weighted) | 124dB | 127dB |
Frequency response | 20Hz-40kHz (±1.5dB) | 20Hz-40kHz (±0.3dB) |
Output level | 90Vpp @ 4Ω 91Vpp @ 8Ω | 90Vpp @ 4Ω 91Vpp @ 8Ω |
Noise (A-weighted) | < 17µVrms | < 17µVrms |
Crosstalk @ 1kHz | -96dB | -116dB |
Input sensitivity | 2Vrms | 4Vrms |
Gain | 25.7dB | 19.8dB |
Channel balance | 0.5dB | 0.5dB |
Output power | 2*300W @ 4Ω, THD+N < 10% 2*165W @ 8Ω, THD+N < 10% 2*245W @ 4Ω, THD+N < 1% 2*135W @ 8Ω, THD+N < 1% | |
Load impedance | 4-8Ω |
General | |
---|---|
Dimensions (L*P*H) | 200*155*41mm |
Color | Black |
Package | 1* Topping PA7 Plus 1* Supply voltage |
Input | RCA |
Input | XLR |
Input | Jack 6.35mm |
Output | Speaker terminal |
Color | Black |
Channel | 2 (Stereo) |
Class | Class D / T |
Amplifier chip | N/A |
Power (W) | 245.0 |
Remote Control | No |