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TOPPING PA7 PLUS Amplifier Class D Balanced 2x245W 4 Ohm Silver
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Topping PA7 Plus
Amplifier Class D Balanced 2x245W 4 Ohm Silver
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.
Comparison between Topping PA7 and PA7 Plus
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
Incredibly low distortion level
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.
Impressive power
The PA7 Plus, despite its compactness, is capable of delivering a significant power. It will indeed be able to deliver no less than 2x200W under 4Ω (1% THD+N) or 2x125W under 8Ω (1% THD+N). It is thus capable of powering greedy audio systems without difficulty while offering a beautiful dynamic.
Single-ended & balanced outputs
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.
Volume bypass
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).
12V Trigger
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.
Topping PA7 Plus review by Audio Science Review (Amir)
" 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 recommande 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 | Silver |
| Package | 1* Topping PA7 Plus 1* Supply voltage |
| Input | Jack 6.35mm |
| Input | RCA |
| Input | XLR |
| Output | Speaker terminal |
| Color | Silver |
| Channel | 2 (Stereo) |
| Class | Class D / T |
| Amplifier chip | N/A |
| Power (W) | 245.0 |
| Remote Control | No |
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