The "MAGNUM" series of amps and preamps feature significant parts upgrades that improve performance in a number of important ways. Increased transparency, greater dynamics, improved bass and high frequency response, as well as a smoother and more refined presentation are all part of the Magnum upgrade. Please note that all of our currently manufactured products (i.e. Zeus, Stereo 90, Ninety Nine, Tempest II, etc.. ) are already manufactured with Magnum type parts or better. The Magnum upgrade package is still available for older amps and preamps and consist of the following modifications:

The M-120, Eighty-Eight,
and Tempest MAGNUM amplifiers:
- Larger higher performance output transformers
- Larger power supply
- Power supply mods
- Ultra high quality interstage coupling capacitors
- Precision Dale-Vishay resistors
- Upgraded binding posts
- Gold tube sockets
- Upgraded input and output tubes
- Harmonic Technology silver wiring
- Magnum faceplate and blue LED

The Ninety-Nine and Sixty-Six MAGNUM preamplifiers:
- Larger power supply
- Extensive power supply mods
- Ultra high quality coupling and output capacitors
- Harmonic Technology silver wiring (unshielded wires)
- Gold tube sockets
- Upgraded tube set
- Additional Dale-Vishay resistors
- Magnum faceplate and blue LED

Upgrades subject to change without notice

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