In the REF-series we provide three different low-power amplifiers with high sound quality. These models were mainly designed for monitoring in recording studios, broadcast and post-production control rooms, as well as providing backgound music in restaurants etc.

Depending on your personal use we offer an output power from 50 Watt up to 150 Watt per channel. The wide frequency response (5 Hz and 150 kHz) ensures brilliant sound. With their transformer and classical class AB output technology, the REF-serie provide top-of-the line sound quality for an affordable price.

Please also check out our DTR200: A transformer unit that optically matches the REF series to drive 100V lines.


Output Power (RMS per channel, 2 channels driven)

Stereo 4 Ohm     150W  
Stereo 8 Ohm     90W  
Bridge Mode 8 Ohm     300W  


S/N Ratio >94 dB flat, >98 dBA
THD 20 Hz...20 KHz @ 50% Output power <0.08%
THD 1 kHz @ 50% Output power <0.02%
IMD (SMPTE) @ 50% Output power <0.02%
Frequency Range (+0 / -3 dB) 5Hz...45kHz
Damping Factor  >200 (balanced damping factor)
Dimensions (L x H x P) 483 x 44 x 390 mm
Rack Space  1U
Weight  10 kg
Warranty 3 years