Description
Allnic A-2000 MK3 KT170 Power Amplifier Black Trade-In
The A-2000 MK3 is a class AB power amplifier that uses two KT170 beam-tetrode output tubes per channel and produces 120W in pentode mode and 60W in triode mode through push-pull operation. One triple-connected 5654 pentode tube per channel is used in the first-stage to secure a voltage gain of 26dB, and two 6S4 triode tubes per channel are used as the phase inversion and drive tubes for push-pull driving of the KT170 output tubes. The A-2000 MK3 uses two of Allnic’ssignature permalloy core output transformers, one per channel.
Specifications:
• 120w (8Ω load, at 1KHz) Pentode
• 60w (8Ω load, at 1KHz) Triode
Distortion:
• 0.17% at 1KHz at 10w
Frequency Response:
20Hz- 20Khz
Tubes (per chassis):
• KT170 x 4 (power tube)
• 6S4 x 4 (or 6S4A – second drivers
S/N Ratio:
• -80dB (CCIR, 1KHz)
• 8 at 8Ω load at 1KHz
Voltage gain:
• +26dB
Input Impedance:
• 100KΩ (single-ended, unbalanced)
Input Sensitivity:
• 1.3V for maximum rated power
Fuses:
Mains: AC 5A, 250V slow-blow for 110/120V regions AC 3A, 250V slow-blow for 230/240V regions
KT170: 0.5A, 250V, 20mm slow-blow
Dimensions:
• (W x D x H) 440mm (17 inches) x 480mm (19 inches) X 300mm (12 inches)
Weight:
• 36Kg (80 lbs) net • 41Kg (90lbs) shipping weight
Warranty
90 Day acX Warranty
