Replacement small-signal transistors for the preamp, tremolo and driver stages of the Wurlitzer 200A amplifier board. These devices handle voltage amplification, tone shaping and signal conditioning before the output stage.

In ageing 200A units, original small-signal transistors can become noisy, unstable, or drift out of specification. This commonly results in:

• Background hiss or crackle

• Intermittent distortion

• Weak or inconsistent tremolo

• Loss of gain

• Random popping noises

These modern replacement transistors are selected for appropriate gain range, voltage rating and low-noise performance suitable for the 200A circuit topology.

Important Notes

• Intended specifically for the Wurlitzer 200A amplifier board.

• Not automatically interchangeable with earlier 200 or 206/206A revisions without confirmation.

• Installation requires soldering and familiarity with amplifier servicing procedures.

Servicing Available

If you would prefer the work carried out professionally, we can replace faulty small-signal transistors and fully service your instrument.

To book your Wurlitzer in, please contact info@possumpiano.com to arrange assessment and scheduling.