Fender Blues Deville Made in USA Modifications
$ 139.95
Release the classic Fender tone hiding in your USA Blues DeVille. The Blues DeVille sounds good and is fairly reliable — the Fromel Supreme kit takes it the rest of the way. The flabby, dark bottom end is gone; what you get is full, warm, classic Fender tone with sparkling top end, plus fixes for the amp's few common trouble spots.
This kit fits the original Made-in-USA Blues DeVille. Have the Reissue? Use the Reissue version here →
Which option should I order?
- Supreme — the ultimate upgrade: the Complete Mod Kit and the Recap Kit combined (all the mods below). Start here.
- Recap — filter & cathode cap refresh with MOD Filter Caps and top shelf components.
- Have us install — send us your amp and we'll do the whole job (parts + labor).
Most players with basic soldering skills can finish the mods in a couple of hours using our detailed, illustrated instructions.
Everything the Supreme kit upgrades (full breakdown)
Tone Stack — Loses the farty bottom, honky mids, and muddiness. High-quality WIMA caps at corrected values for the Bass and Mid (plus a corrected slope resistor), and a Silver Mica cap in place of the cheap ceramic Treble cap, so the amp sounds huge and warm with sparkle instead of dark and buried.
Twin Mod — Tightens the mids and cleans up a flabby bottom, and lets you pull mids fully out for more versatility — a single jumper wire for far better tone control.
Brightness — Adds sparkle at low volumes, then eases off as you turn up so the amp never gets brittle when loud.
Power Resistors — Many Blues DeVille problems (especially on older units) trace to the switching power resistors. Two new ones, installed properly, head off trouble down the road.
Plate Load Resistors — Replaced with 1% ½-watt metal-film resistors, curing the loud crackle/static these amps can develop and adding richer harmonic overtones.
Reverb Mod — Stops the reverb washing out past 3 (especially at low volume) for fuller, more natural, more controllable reverb.
Input Jack Module — The stock jacks are soldered straight to the circuit board, where plug tension can damage it. This replaces them with a high-quality jack board with upgraded dropping and reference resistors for lower noise.
Proper Lead Dress — Clear instructions for twisting and routing the internal wiring the way boutique amps do, for lower noise and less oscillation.
Electrolytic Cap Upgrade — Replaces all power-filter and cathode-bypass caps with high-quality MOD Filter Caps and top shelf components.
Prefer we do it for you?
“Have us install” covers parts and labor. We bill return shipping on completion (comparable to what you paid to ship it in); estimate USPS Parcel Select rates here by the zones between you and our Pacific Northwest shop. Info on sending your amp in →
“Your instructions were clear and concise, and the results spectacular. Bravo on a wonderful product.”
Safety, warranty & shipping
Warning: These modifications WILL void your amplifier's warranty. Amps carry deadly voltages even when unplugged — follow the instructions carefully. If you're at all unsure of your ability, stop and have a professional do it, or send your amp to us.
No warranty: This kit and its instructions come with no warranty of any kind. Modifications are done at your own risk and you agree to hold the seller harmless against any and all claims. Tube amplifiers contain parts that operate at very high temperatures and deadly voltages; if you are not sure of your abilities, do not perform these mods.
All orders are processed within three business days. International shipments may be delayed up to six weeks depending on customs.

Share this item: