description

SOLD

--Very good condition.  Amazing sound when we played in the shop.  Original boxes and powercords

​Pure Class-A Push-Pull triode Monoblock amplifiers

The VPA consists of a pair of mono block vacuum tube power amplifiers. Equipped with symmetrical and asymmetrical inputs, they offer a power output of 50 Watts through a pure class A output stage with no feedback. Since its introduction in 1998, the VPA has won prestigious awards and, more importantly, become a reference for a tremendous number of audiophiles all over the world.

DIFFICULT SPEAKER LOADS AND ZERO NEGATIVE FEEDBACK

Vacuum tube amplifiers seldom drive difficult speaker loads with success. Using electrostatic or low-impedance dynamic speaker designs with these amplifiers often yield unpredictable results. With the VPA, implementing a zero negative feedback design renders matching difficult speakers much easier. In addition, the VPA offers 4, 8 and 16 Ω outputs so it can accommodate even the most demanding loudspeakers.

FAST, DEEP AND LOW WITH NAGRA OUTPUT TRANSFORMERS

Proprietary Nagra output transformers are used to avoid low-frequency saturation and high frequency ringing so common in other transformer-coupled output states. Bass notes are delivered with absolute authority and sound-stage scale delineation is simply superb.

TECHNICAL SPECIFICATION

ELECTRONICS

Amplification class: Pure class-A

Input impedance: > 100 kOhms

Output impedance: 4, 8 or 16 ohms

Frequency response: 20Hz to 40 kHz +0 -3dB

Power: 50 W rms

Signal-to-noise ratio: Typically >100dB (ASA A)

Input circuit valves: 2 x ECC83 (input and differential), 1 x E182CC (driver)

Power valves: 845 Triodes

Power consumption: 250 W

Mains power supply: 108-121 V or 216-242 V (Japan: 100 V)

GENERAL

Input connectors: Balanced (XLR) or gold-plated Cinch WBT for unbalanced inputs

Output connectors: Gold-plated WBT, for wires up to 4.2 mm,4 mm banana connectors for 6.35 mm spade

Weight: 13.5 kg (30 lbs) each

Dimension: 335 x 115 x 375 mm (13 x 4½ x 14¾ inches) without valves