Tube Power Amp Reviews

Description: Vacuum-tube monoblock amplifier. Tube complement (each monoblock): eight 6550C, four 6922, two 5687. Rated output power: 20Hz-20kHz, <1% THD, 220W into 8, 4, and 2 ohms (23.4, 20.4, and 17.4dBW, respectively). Frequency response: 5Hz-75kHz, ±0.5dB at 1W; 15Hz-60kHz, ±0.5dB at 220W. Input sensitivity for full output power: 2.2V, balanced or single-ended inputs. Voltage gain: 25.6dB into 8 ohms, 22.6dB into 4 ohms, 19.6dB into 2 ohms. Input impedance: 100k ohms single-ended, 200k ohms balanced. Output impedance: 0.25 ohms at 1kHz. Damping factor: >50 (using IHF method from RS-490). Power consumption: 375W at idle, 580W at rated output.
Dimensions: 18" (460mm) W by 9" (230mm) H by 22" (560mm) D. Net weight: 100 lbs (45kg) each.
Serial numbers of units reviewed: 106241, 106242 (final pair).
Price: $9999/pair (2000); no longer available (2004). Approximate number of dealers: 100. Warranty: 5 years; tubes, 1 year, limited.
Manufacturer: Anthem/Sonic Frontiers (a division of Paradigm), 205 Annagem Blvd., Mississauga, Ontario, Canada L5T 2V1. Tel: (905) 362-0958. Fax: (905) 564-4642. Web: www.anthemAV.com.