Triode Amplifiers

Pentode & Tetrode Amplifiers

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Troubadour 6L6
Troubadour 350
Topaz 6CA7 (EL34)
Topaz KT120
Topaz Duo KT150 monoblocks
Tempest Duo KT120 monoblocks
Now using my newly developed modified Pi wound output transformers for fully balanced DC resistance, AC impedance, and low distortion.
The new output transformers now measure 20hz to 20khz +/-0.1db.
What this means to you is the output tansformers are not a limiting factor so no design compromises are needed to compensate.

The Tempest uses valve rectifiers in it's power supply to offer the user a true all valve experience. The power supply of the Tempest uses a massively over sized power transformer rated at 600VA, dual rectifiers, hand wound filter choke, and German made F&T filter capacitors. What this means is the amplifiers operates whisper quiet and there is never a shortage of power available for those times when no-one is about ;).

The output transformers on the Tempest are wound with 27 interleaved layers on a large core size for extended bass response. A special winding technique is used to improve detail, micro detail and improve damping.

The Tempest can be biased to run KT66, KT77, KT88, KT90, 6L6gc, 6550, EL34, 6CA7 and the new Tung-sol KT120 output valves.

The bias on the Tempest is easily set by the owner. Above chassis adjustment point and build in LCD meter make it a 1 minute task. Once set, it only needs to be checked every 4 to 8 weeks to keep the Tempest running at its best.
$3495.00 (Supplied with Tung-sol KT120 output tubes)


Power Output - 70 watts per channel

Frequency response  -3db - 6hz to >100khz

Signal to Noise - >88db A Weighted

Signal to Hum - > 80db

Distortion - <0.1% at 1 watt rms (Typically 0.03%)

Hum Level - <2.0 millivolt

Sensitivity - 300mV

Input impedance - 100K

Inputs  4

Speaker output 8 ohm (6 to 10 ohm is fine)

Damping Factor >10 (20hz to 20khz 8 ohm)

Weight ~24kg (~53lb)

Dimensions 440mm x 370mm x 220mm  (width x depth x height)

Below: Tempest on optional Jarrah base (+$50.00)


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