Pearl Acoustics 170 SE – an Single-Ended Amplifier on PSVANE KT150 tubes

The tube stereo power amplifier Pearl Acoustics 170 SE should go on sale only at the end of 2025 – but the veil of secrecy over the device has already been lifted. We are waiting for a dual mono, single ended design power amp with 0 dB global feedback. The device is based on the inexpensive PSVANE "Horizon" KT150 tubes – which delivers excellent holography, as well as good bass and detail without a significant loss in output power.

Pearl Acoustics 170 SE is capable of developing 2 x 18 W of pure Class A power into 8 Ohms load with distortion of 0.5% 2nd and 0.03% 3rd harmonic at 1 W. The most interesting thing is that the amplifier easily works with low-impedance acoustics – down to a impedance of 2 Ohms. The damping factor is 6 units.

Pearl Acoustics 170 SE does not use solid-state devices in the signal path, nor followers or buffers in the signal path. High current and low impedance design with ultra-short signal path and minimal discrete wiring guarantees perfectly clean sound. Automatic self-regulating, cathode bias topology extends the life of the tubes. The icing on the cake is custom designed and made transformers and chassis mounted valve sockets.