Tube Power Amp Reviews

Description: Tubed stereo power amplifier with push-pull pentode, class-A/B output stage and adjustable bias for each tube. Tube complement: four KT120 or KT88, three ECC82. Inputs: 1 RCA, 1 XLR. Outputs: 1 speaker terminal suitable for 4mm banana connectors and spades. Maximum output power: High Power mode: 100Wpc into 4 ohms (17dBW); Low Power mode: 70Wpc into 4 ohms (15.5dBW); (power output decreases by 20% into 8 ohms). Power bandwidth: 25Hz–70kHz, –3dB at full power; frequency response 5Hz–80kHz, –3dB. Total harmonic distortion: <0.1% at 10W into 4 ohms. Signal/Noise ratio: >100dB. Noise: <100ÊV, 150Hz–15kHz. Input sensitivity: 0.8V RCA, 1.6V XLR. Input impedance: 220k ohms RCA, 10k ohms each phase XLR. CMRR of XLR input: >85dB/1kHz. Minimum load impedance: 2 ohms. Gain: +28dB (RCA). ECOmode trigger level: 0.5mV. Power consumption: <20W in ECOmode, 200W at idle, 400W at full power. Mains: 100/120/240V AC available.
Dimensions: 19" (488mm) W by 7.3" (186mm) H by 16" (410mm) D. Weight: 53.9 lbs (24.5kg). Black Box: 6.6" (170mm) W by 3.8" (97mm) H by 10" (257mm) D. Weight: 6.8 lbs (3.1kg). Super Black Box: 7.9" (203mm) W by 6.2" (159mm) H by 12.5" (320mm) D. Weight: 16.5 lbs (7.5kg). Connecting cable: 27.3" (70cm; other lengths on request).
Finishes: Aluminum (silver or black).
Serial number of unit reviewed: 4116959 ESB.
Prices: $10,000. Black Box: $1200. Super Black Box: $3500. Approximate number of dealers: 16.
Manufacturer: Octave Audio, Industriestrasse 13, 76307 Karlsbad, Germany. Tel: (49) (0)72-48-32-78. Fax: (49) (0)72-48-32-79. Web: www.octave.de. US distributor: Dynaudio North America, 1140 Tower Lane, Bensenville, IL 60106. Tel: (630) 238-4200. Fax: (630) 238-0112. Web: www.dynaudiousa.com.