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Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.

Topping's PA5 II amplifier is a compact and powerful model, adopting a totally balanced structure and an innovative Class D amplifier circuit, enabling it to develop a significant power of 2x100W under 4Ω with a low level of distortion. The excellent parameterisation carried out by the brand's engineers ensures clear, clean and deep sound reproduction, with no background noise. At 5W and 4Ω, THD+N is measured at less than 0.0004%.
The PA5 II also incorporates an effective and comprehensive protection circuit, acting against overvoltage, undervoltage, short-circuit, overcurrent and overheating.
On the input side, there is a choice of single-ended stereo RCA or two 6.35mm TRS jacks for balanced input. Output is via conventional speaker terminals that accept banana plugs. There's also a 12V trigger on the rear of the unit, enabling the PA5 II to be connected to other devices for automatic on/off.
To use the 12V trigger function, it must be activated using the switch on the front of the device.


| 1 | ON-OFF / Trigger switch |
| 2 | ON/OFF LED indicator |
| 3 | Input switch |
| 4 | Volume button |
| 5 | Balanced Jack 6.35mm TRS left channel input |
| 6 | Single-ended RCA left channel input |
| 7 | Speaker R+ output |
| 8 | Speaker L+ output |
| 9 | Power input |
| 10 | Balanced Jack 6.35mm TRS right channel input |
| 11 | Single-ended RCA right channel input |
| 12 | Trigger 12V Jack 3.5mm input |
| 13 | Speaker HP output |
| 14 | Speaker HP output |
Technical characteristics
| Specifications | |
|---|---|
| Product type | Amplifier |
| Amplification type | Class D |
| Inputs | Single-ended stereo RCA Balanced Jack 6.35mm TRS |
| Output | Speaker terminals |
| Trigger | 12V |
| Balanced input measurements | |
|---|---|
| THD+N (@ 1kHz, A-Weighted) | < 0.0004% @ 4Ω 5W < 0.0003% @ 8Ω 5W |
| THD+N (@ No-Weighted, 20kBW) | < 0.0015% @ 4Ω 5W < 0.0006% @ 8Ω 5W |
| SNR | 124dB (@ max out, 1kHz, A-Weighted) |
| Dynamic range | 124dB (@ 1kHz, A-Weighted) |
| Frequency response | 20Hz - 40kHz (±0.3dB) |
| Output level | 65Vpp @ 4Ω 68Vpp @ 8Ω |
| Noise | < 15µVrms (@ A-Weighted) |
| Crosstalk | -106dB (@ 1kHz) |
| Input sensitivity | 2.6Vrms |
| Gain | 19.2dB |
| Channel balance | 0.1dB |
| Output power | 2x100W @ 4Ω, THD+N < 10% 2x100W @ 4Ω THD+N < 1% 2x85W @ 8Ω, THD+N < 10% 2x65W @ 8Ω, THD+N <1% |
| Single-ended input measurements | |
|---|---|
| THD+N (@ 1kHz, A-Weighted) | < 0.0005% @ 4Ω 5W < 0.0004% @ 8Ω 5W |
| THD+N (@ No-Weighted, 20kBW) | < 0.0015% @ 4Ω 5W < 0.0006% @ 8Ω 5W |
| SNR | 121dB (@ sortie max, 1kHz, A-Weighted) |
| Dynamic range | 121dB (@ 1kHz, A-Weighted) |
| Frequency response | 20Hz - 40kHz (±0.3dB) |
| Output level | 65Vpp @ 4Ω 68Vpp @ 8Ω |
| Noise | < 15µVrms (@ A-Weighted) |
| Crosstalk | -90dB (@ 1kHz) |
| Input sensitivity | 1.3Vrms |
| Gain | 25dB |
| Channel balanced | 0.1dB |
| Output power | 2x100W @ 4Ω, THD+N < 10% 2x100W @ 4Ω THD+N < 1% 2x85W @ 8Ω, THD+N < 10% 2x65W @ 8Ω, THD+N <1% |
| General | |
|---|---|
| Supply voltage | 38VDC 3A |
| Power consumption | < 0.5W |
| Dimensions (W*D*H) | 129*166*41mm |
| Weight | 680g |
| Color | Silver |
| Package | 1* Topping PA5 II 1* Power supply |
| Input | Jack 6.35mm |
| Output | Speaker terminal |
| Color | Black |
| Channel | 2 (Stereo) |
| Class | Class D / T |
| Amplifier chip | N/A |
| Power (W) | 125.0 |
| Remote Control | No |