Monarchy Audio: High-End at Low Cost


Pair of Mono Block Tube Amps

  • 100 Watt tube amp using KT-90 tubes
  • 75 Watt using 6550 output tubes
  • Williamson circuit with factory circuit diagramoriginally built in San Jose for Allen Organs
  • Upgraded by Monarchy Audio with high quality capacitors and wiring
  • Dual Input stage bypassed for simpler signal path
  • Very easy bias adjustment with externally mounted terminals
  • Choice of output tubes:
    • With 6550 output tubes: 75 Watt, $1,100 per mono block
    • With EH KT-90 output tubes: 100 Watt , $1,200 per mono block.
  • Shipping weight each amp: 50 lbs
  • Audition available in South San Francisco

NB
Due to the overkill design and choice of over-sized AC and Output transformers,output up to 120 Watt is possible with the higher power KT-150 tubes, aftereasy bias adjustments. The amps are offered with a more conservative output.

FootNote:
Although not part of the current offer, the buyer might be interested to know that these mono blocks can be very easily upgraded to higher power by replacing the KT-90 with the newest Tung Sol KT-150 tubes. The bias can be easily re-set to bring the optimal operating values for these tubes.A single pair of these tubes, driven by the cathode outputs of the driver tube(6SN7),could yield a more coherent and linear sound output than a bunch of 6550 bundled together to achieve higher power. (See image below.)

 

Pair of Mono Block Tube Amp

Mono Block Amp
Williamson
Williamson Mono Block
Tubes

kt90

KT-90 Tube Option

 

 

 

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factory direct discounts
Monarchy Audio
380 Swift Ave., #21 South
San Francisco, CA 94080, USA
Call: 650.873.3055
Fax: 650. 588.0335

monarchy@earthlink.net

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