Rogue AudioStereo 90usedRogue Audio Stereo 90 Super Magnum UpgradeSuper Magnum upgrade at Rogue Factory; cost $695:- Hex Fred diodes in bias supply- Screen grid resistors upgraded- Polypropylene bypass capacitors in filters- Bypass coupling caps- PRP resitors in ...1300.00

Rogue Audio Stereo 90 Super Magnum Upgrade

Listing ID: lis8jeh3 Classified 
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Condition
8/10
Payment methods
Ships fromFort Lauderdale, FL, 33315
Ships toUnited States
Package dimensions24.0" × 24.0" × 24.0" (70.0 lbs.)
Shipping carrierFedEx
Shipping cost
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Original accessoriesBox, Manual
AverageResearch Pricing

Super Magnum upgrade at Rogue Factory; cost $695:

- Hex Fred diodes in bias supply
- Screen grid resistors upgraded
- Polypropylene bypass capacitors in filters

- Bypass coupling caps
- PRP resitors in all critical spots
- Cardas binding posts

- Cardas RCA jacks 
- Upgraded wiring 
- Upgraded small signal tubes 
- KT90 output tubes


Stereo 90 Spec
General Features:

  • Ultra-wide bandwidth output transformers
  • Massive fully regulated high voltage supply
  • Matched quad output tubes
  • User selectable 4 and 8 ohm output taps
  • User selectable triode or ultralinear output
  • (4) KT90, (2) 6SN7, (2) 12AX7 tube complement
  • Built in bias meter
  • Integral tube cage
  • Machined aluminum faceplate
  • Mechanically isolated transformers
  • Heavy (2 ounce) copper circuit board
  • All precision components


  • Specifications: 
  • output power: 90 WPC minimum
  • input impedance: 200K Ohms
  • frequency response: 5Hz - 50KHz ± 1dB
  • THD: <0.1% typ., <1.0% at rated power
  • input sensitivity: 1.0V RMS
  • dimensions: 18"W x 15¾"D x 7"H
  • weight: 60 lbs.
  • power requirements: 115/230V - 50 - 60Hz
  • The super magnum upgrade was done at Rogue. It was sent back to Rogue to insure that it meets factory specs. A rectifier and a few resistors/capacitors were replaced to meet factory specs. Comes with the original tubes (KT90, 6SN, 12ax7) with 100 hours of use. This amp is very powerful putting out 90 watts in ultralinear mode and 45 watts in triode.

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