Axiom®, ToneClone®, Partridge & APS Series Transformers for HIWATT & HIWATT-style Amplifiers

Notes: For restorations of your original or vintage transformers please call us. See Mercury Vintage™.
For tier pricing information, please see the
Ordering Page.

Legend: OT = Output Transformer, PT = Power Transformer, C = Choke, RT = Reverb Transformer, PI = Phase Inverter, IS = Inter-Stage Transformer, F = Filament Transformer




OT HI-20-O 20 watt -- 4, 8 & 16Ω taps -- Upgrade! 260.00

OT HI50-O  50 watt 255.00

OT HI50-OC 50 watt -- 4, 8 & 16 taps 265.00

OT HIWATT50-OT 50 watt -- DR504 255.00

OT HIO50-M  50 watt -- 2, 4, 8 & 16Ω taps 308.00

OT HI50-OV Earliest 50 watt -- UL taps -- 8 & 16Ω secondary taps
Within the first 12 Hiwatts built -- Partridge transformer design

OT HI100-O  100 watt 308.00

OT HI200-O  '70s 200 watt -- model DR-201 -- Partridge transformer design 451.00

PT HI-20-P  20 watt 186.00

PT HI-P40-100/120  Modern 40 watt 223.00

PT HI50-P  50 watt 281.00

PT HI100-P  100 watt 334.00

PT HI50-PV  Earliest 50 watt -- single 120V primary --
5V tube rectifier winding.
This transformer design is from within the first 12 Hiwatts built!
Partridge transformer design

PT HI50-PV/240 Earliest 50 watt -- 210V, 230V & 240V primary --
5V tube rectifier winding

PT HI200-P  '70s 200 watt -- model DR-201 -- Partridge transformer design 504.00

PT HI-HG50-P High Gain 50 Combo -- dual primary taps -- Drop-in Upgrade! 281.00

PT HI-SG30-P SG30 -- 120V primary tap -- Drop-in Upgrade! 186.00

PT HI-CUSTOM7-P Custom 7 -- Drop-in Upgrade! -- Universal Voltage Primary 186.00

*Quantity discounts are available for everyone based upon your accumulated sales over a lifetime, not single purchases. See our Ordering Page for a more complete description.

For more information, assistance, quotes or inquiries:

10050 Remmet Ave. • Chatsworth, CA 91311 • FAX (818) 998-7835

(818) 998-7791

CAUTION! The voltages in your amplifier can be dangerous. Transformers and chokes are not user serviceable parts. Installation of these components should always be performed by an experienced technician. The simple ability to use a soldering iron is not enough to qualify a "do it yourself person." Those who are inexperienced in working with electronic circuits should never attempt to service their amplifier. Household line currents can be deadly!! Transformers, chokes and large filter capacitors can store a dangerous charge for several days or more after the amplifier has been unplugged. Never touch the terminals of such devices without being certain of their charge status. Risk of shock and damage to equipment may result from mishandling and/or improper use of these components. Please use common sense and always think safety first. After all, tone is most enjoyed when you are alive to hear it.