Before we start, I’d like to share my respect for the real entrepreneurs who get into the gear industry. The financial and commercial challenges are of existential magnitude, and I can only imagine the complexity of scaling up production lines. For now, let’s start with the easy part: designing the amps of our dreams.

The Smarter Deluxe Reverb

The idea behind this amp is to enhance the black-panel Deluxe Reverb by making it simpler, yet more versatile. First, we’d need an extra 2 cm of cabinet height for better clearance between the output transformer and the magnet of a heavy-duty 12" speaker. The extra ambience and fullness from the slightly larger cabinet would be appreciated by many who find the Deluxe too small on larger stages. I’d offer both 2x10 and 1x12 speaker baffles of birch plywood that are more durable than MDF particle boards.

For the 2x10 version, there would be simple on/off switches on the lower back plate to disconnect the speaker wires. That way, players could disable one speaker to easily reduce volume and headroom, or select between two different sounding speakers. Also, these switches will enable super-easy speaker comparisons at home. There would be a 4- and 8-ohm impedance selector based on a multi-tap output transformer that is the size of a Vibrolux Reverb 125A6A transformer—one size bigger than the Deluxe´s 125A1A. This would tighten up the low-end response to accommodate the bigger cabinet.

Like the Princeton Reverb, the amp would be single-channel with reverb and tremolo, but with only one input jack. I would keep the Deluxe’s tone stack, and add a bright switch and a mid-control with a larger 20-25K mid-pot value instead of the Fender-default 10K. This would enable players to dial in many more tones between a scooped American sound and a British growl. The power amp section is 100 percent Deluxe Reverb, which would allow 6L6 tube swaps without the need to change anything else. The full power of the 6L6 will not be utilized due to the lower 6V6 plate voltages, but it gives you some extra headroom. To reduce costs and complexity, I would use a diode rectifier and transistors in the reverb circuitry, like the modern Blues Junior. This saves two tubes and creates less trouble down the road. The tremolo would be based on the Princeton Reverb’s bias-based tremolo circuit, since it sweeps deeper than the Deluxe Reverb’s optoisolator tremolo.

The Bassman Pro Reverb

My second amp would be a large, warm-sounding amp with preamp distortion abilities. I really like the Vibro-King and tweed Bassman 5F6-A circuit designs, where the volume control is placed alone before a 12AX7 preamp tube stage and then followed by the EQ section. This means that a high volume-knob setting allows a strong signal to enter the 12AX7, creating a distorted signal at the tube’s output. This distorted signal then enters the bass, mid, and treble pots afterward, which can lower the still-distorted signal amplitude before the phase inverter and power amp section. With this preamp design, you can achieve a heavily cranked tone at low volumes based on preamp distortion and clean power amp operation. This trick is not possible with the typical AB763 amps, where the volume and EQ work together at the same stage. If you set the volume high and the bass, mids, and treble low, they cancel each other before hitting the next tube stage.

“This amp could do it all: pleasant cleans and distortion at both moderate and loud levels.”

I would use a Pro Reverb-sized 2x12 cabinet for this amp, with the output impedance selector and speaker switches I mentioned earlier. The amp would have dual 6L6s in push/pull, and a Super Reverb-sized 125A9A output transformer for a firm low end at 40-watt power output. I would go for cathode bias in this amp, for a compressed, low-wattage, tweed-style response, to add even more dirt next after the hot preamp section. There is only one jack input into the single channel, with reverb, tremolo, and full EQ controls (bright switch, bass, mid, and treble). Since this would be a more costly amp, I’d use a tube rectifier and tube-driven reverb. This amp could do it all: pleasant cleans and distortion at both moderate and loud levels. It wouldn’t stay loud and clean, though. For that, we would need a third amp, which we will maybe get back to later.

I’d be excited to hear your thoughts about these amps, and if I should follow my dreams to build themI would use a Pro Reverb-sized 2x12 cabinet for this amp, with the output impedance selector and speaker switches I mentioned earlier. The amp would have dual 6L6s in push/pull, and a Super Reverb-sized 125A9A output transformer for a firm low end at 40-watt power output. I would go for cathode bias in this amp, for a compressed, low-wattage, tweed-style response, to add even more dirt next after the hot preamp section. There is only one jack input into the single channel, with reverb, tremolo, and full EQ controls (bright switch, bass, mid, and treble). Since this would be a more costly amp, I’d use a tube rectifier and tube-driven reverb. This amp could do it all: pleasant cleans and distortion at both moderate and loud levels. It wouldn’t stay loud and clean, though. For that, we would need a third amp, which we will maybe get back to later.

I’d be excited to hear your thoughts about these amps, and if I should follow my dreams to build them!