PA34B 80W

PA34B is a monoblock amplifier with 80W output power. The circuit is based on the well known PA12 but modified in order to drive 4 output tubes. As the current drive capacity is twice compared to PA12, PA34 can be used to drive less efficient speakers.

The amplifier is built on a large PCB except for critical parts that are built using so called Point to Point, (PtP) technology, ceramic solder supports are used that can withstand 5kV. The chassis is made of 10mm aluminium which gives extraordinary mechanical stability and completely remove vibration induced noise.


Output power 80W in 8 ohm at less than 1% distortion
60W in 4 ohm at less than 1% distortion
Distortion at 2W < 0.01%
Distortion at 25W < 0.1%
Frequency response 5 - 100kHz - 1dB
Power bandwidth 10 - 100kHz - 1dB
Rise time < 0.5us
Hum and noise < -100dBA
Output impedance Factory selectable, 0,2 - 1,5ohm
Input connectors RCA phono + XLR
Dimensions 275 x 335 x 400 mm, (W x H x D)
Weight 19kg