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Custom Made Hand Wired Amplifiers
When Quality and Tone is a Must


"Plexi 100"


(click on photos for larger view)

2 channels 4 inputs (high & low)
Bright and normal channels
2 volume, treble, bass and presence
4 matched JJ EL34 power tubes
3 JJ 12AX7 preamp tubes
1 solid state rectifier
Heyboer plexi transformers
4, 8 or 16ohm selector
two speaker outputs
plexi panels
original 100 watt plexi specs
dijon "mustard" caps
carbon comp resistors
Steel chassis
hand wired point to point(teflon wire)
baltic birch cabinet(black levant tolex)

23"h x 32"w x 10-1/2"d
5 year limited warranty.
1 yr speakers 90 days tubes





Optional Tolex:
Optional Knobs:
add $10.00
Negative Feedback Control:
add $35.00


Cathode Cap Mod:                        add $35.00
On the plexi and metal face amps up through 1972, there was a .68 cap on the second stage cathode circuit.  It gave an increase in gain and midrange. My 50 watts come stock with this cap but you can order this amp with a small switch (that I install on the front panel) that takes this cap in and out of the circuit.

Gain Stage Mod:                 add $100.00
I also offer my gain mod, which works like this: the input tube has two sides, channel one uses one half of the tube, channel two uses the other half.  On the gain mod, one half of the tube drives the other half of the tube using the volume two pot as the gain control and the volume one pot as the volume control.  This gives you a great amount of controllable gain.  When you plug into the channel one input, it bypasses the extra gain stage and works like a stock plexi preamp. Both channels work with a master volume that I install on the front or back of the amp.  The master volume is included in the gain stage mod.

Negative Feedback Control:           add $35.00
Also available is the optional negative feedback control. In these amps the negative feedback resistor varied from 47k to 100k depending on the year. With the control (mounted on back of amp) you can adjust this from 47k to 100k. This will give you more or less power amp gain.

Master Volume Mod:            add $50.00
Pre or post Pl master volume. I install these on the rear of the amp or in the front in an unused input jack hole.

Adjustable line out                 add $50.00

Zero LossEffects loop with bypass switch       add $150.00

The Plexi 100 is a replica of the famed late 60's Marshall 100 watt head with Solid state rectifier, four EL-34 power tubes, three 12AX7 preamp tubes and Heyboer 100 watt plexi replica transformers. All hand wired point to point on a vintage style turret board just like the originals.



This is the monster that created legends.

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