Tube Power Amp Reviews

Description: Tubed monoblock amplifier using four EL34 tubes in the output stage. Rated output power: 50W minimum continuous sinewave power into 8 ohms at 1kHz (17dBW), with no more than 0.2% THD; 75W minimum continuous sinewave power into 4 ohms at 1kHz (15.75dBW), with no more than 0.2% THD. Dynamic headroom: 1.6dB. Peak output current: 15A. Frequency range: 8Hz–56kHz. Input impedance: 100k ohms. Sensitivity: 750mV (equivalent to a voltage gain of 28.5dB). Slew rate: 15V/µs. Power consumption: not given.
Dimensions: 9" (220mm) H by 16.8" (420mm) W by 10.8" (270mm) D. Shipping weight: 36 lbs (16.5kg).
Serial numbers of units tested: 269208L/R.
Price: $4495/pair (1994); no longer available (2007). Approximate number of dealers: 6 (1994).
Manufacturer: Woodside Electronics, Weston-Super Mare, Avon, England (1994); Woodside Electronics, Llanbedrog, Pwllheli, North Wales (2004); no longer trading (2007). US Importer: Pro Audio, Barrington, IL 60010 (1994). Not distributed (2007). Web: tech.groups.yahoo.com/group/radford/ .