Topology: Single Ended Class "A"
Power Output: 28 Watts @ 1 kHz 8 ohms
Frequency Response: 20 Hz to 47 kHz +-3dB (on declare power)
Input Impedance: 50 kohm
Input Sensitivity 0,7V - zero feedback 1 V - 3dB feedback (RMS)
Noise: 2mV/8ohm zero feedback, 1,2mV/8ohm 3dB feedback
Driver tube: ECC88 (or 6922, 6DJ8, 6n23p), 6SN7 (or 6N8S)
Power tube: GM-70
Rectifier tube: 6X5 (for driver stage)
Power Req./pcs: 220 to 240(110 to 120) V AC - 50 to 60 Hz, 380VA
Input: 3x RCA, 1x XLR & direct input
True DHT SE power.
Very powerful and reliable directly heated triode GM-70 has long been known to fans of triode sound. When properly driven, sound of this 28W power is completely transparent and linear. There is no mystery in our construction - high-quality output transformer, mixed bias (automatic and fixed 70:30), richly designed power supply......
Last review (in Croatian) Sound-news 2014: http://www.sound-news.net/recenzije/stereo/integrirana-pojaala/item/1946-had-audiolab-gm-70se-cyclone