The Octal Signature 30W or 15W
Incredible Octal Pre-Amp Tones with London Power Scaling, Tube Swapping, Voicing Switch and Sag Control
Combo version of the Octal Signature
We can start any build with a 50% deposit. Please contact to set that up.
Combos are possible. We also build extension cabs. Please contact for more information on pricing.
The Octal Signature 30W or 15W
Description:
The Octal Signature is culmination of many years of work and research into making the ultimate octal amp. The Octal Signature amp draws from the Fender Dual Professional, Woody Pro, and early Bassman as well the early Gibson GA series and 40’s and 50’s Valco made amps. It has a warm, articulate cleans and powerful vintage overdrive. However, is far far more flexible than those amps. It is fitted with London Power Scaling so you can get power tube overdrive at any volume. A SAG control allows the amp’s feel to be varied from a solid-state rectifier feel to a compressed tube feel. The one-of-kind voicing switch has a scooped clean position, a fat tweed position, and leaner crunchier position. If that wasn’t enough it can use pretty much any power tube so you can tailor, the sound.
The most important feature however is how touch sensitive and reactive the amp is. It becomes part of your instrument and responds to every nuance. None of the dead feel of digital amps, huge solid-state pedal chains, or of out-of-the box big manufacturer amps. If expression through guitar is your thing this amp will deliver.
The Octal Signature—-this one is my personal amp that an has a custom oxblood tweed lacquer.
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Power: 30 Watts or 15W of all Tube Power
Tube Swapping: Power Tube swapping without bias changes. Can use 6L6GC, 5881, EL-34, 6CA7, 6550, KT77, KT66, KT88, or 6V6 power tubes for different tones.
Octal Pre-amp tubes: 6SJ7 and 6SL7 pre-amp tubes for a fat warm 50’s sound
SAG Control: Allows the user to adjust the amount of sag from solid-state feel to tube feel.
Hand wired for great sound and easy servicing
Controls: Volume, Tone, SAG, Voicing, and Body Controls
Speaker Out: 8 ohm speaker out and ext. Can be modified for multi-impedances if requested.
Low Noise: Special resistor selection for low noise and great tone. Galactic Grounding system and DC referenced heater system for low hum.
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High quality parts used throughout. High quality tube sockets, Switchcraft Jacks, Ultra-long life filter caps, Marlory 150, Vishay, and Panasonic tone caps, custom made toroidal power transformer, custom made choke, custom made or Hammond output transformer, resistors selected for the best tone and lowest noise.
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“Hi Carl
The sound is bold and sweet (almost with a violin-like character) without being in any way harsh. I think the goal here was that of an amp similar to a Fender Twin but of more manageable amperage (and price), and this certainly achieves that end. I had difficulty suspending my playing long enough to send you this note. This amp catches every nuance of the guitar (73 Black Beauty with Fralin Pure PAF humbuckers), with nice tight notes from the low E string, without any trace of muddiness. I keep the "Voicing" knob at mid-position, still experimenting with the Sag. This is exactly what I had in mind when discussing amp options with you in July. This is finally the amp I've been wanting you to build for me (but given the above, don't be surprised if we discuss a Carl's Custom JTM-45 in the not-too-distant future).
Carry on, Dennis”
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The 30W Octal Signature ships with 5881s or KT66s and the 15W version ships with 6V6s. I offer several speaker cabinets. They can be loaded with 50’s style Alinco speaker for smoky tones, more compression and early breakup, Ceramic American speakers for sparkle, great breakup, and more headroom than the Alinco or British style speaker for punch and growl.
Options:
The 30W Octal Signature ships with 5881s 15W version ships with 6V6s. However, I can ship with other power tubes if requested. These amps can use just about any common octal power tube. I offer several speaker cabinets loaded with Weber Vintage Series speaker for authentic detailed American tones.
Custom version with 60W of power and a quad of 6L6WGBS…..
Custom made 12 and 15 inch cab and 210 and 28 speaker cabs.