All Texas Tone amplifiers are build by hand in Austin, Texas, fabricated and/or assembled in our own workshop.
The following practices are performed by hand in our workshop:
All schematic diagrams and 1:1 scale layout documents.
Production and/or modification of turret, tag, or eyelet boards.
Chassis preparation and/or modification.
All component layout, connecting, and soldering.
All wire and cable preparation and routing.
All assembly and testing of finished products.
Texas Tone Amps uses many Commercial Off-the-Shelf (COTS) components. The below listed components are procured from carefully selected vendors:
Amplifier and speaker cabinets - Made in USA to Texas Tone Amp specifications.
Amplifier chassis. Standard chassis models, Made in USA and modified by Texas Tone Amps.
Transformers. See below.
Speakers. See below.
Vacuum tubes - made in the Čadca, Slovak Republic by JJ Electronic, or in St. Petersburg, Russia by New Sensor Corp. All tubes are tested for low noise and low microphonics, and all power tube in push-pull class AB amps are matched pairs or quartets. We feature JJ Electronic tubes from Eurotubes. We do not use Chinese-made tubes.
All parts used on Texas Tone Amps are sourced for high quality, availabilty, and value. We strive to use USA made products whenever possible, and seriously avoid low-quality components. The below listed items are validated to be USA made:
All cabinets for combo amps, amp heads, and speaker cabs.
Speakers:
ToneSpeak™ speakers marked "Assembled in USA" - EIA code 114
Eminence speakers marked "Assembled in the U.S.A." - EIA code 67.
Many parts are globally made. In these cases we use components from firms well-known for qualtiy:
Jensen Speakers - Made in Italy
Celestion speakers - made globally
Hammond transformers - Made in Canada
Switchcraft (USA) and Cliff (UK) connecting devices.
CTS potentiometers
Capacitors
CDE Cornell Dubilier
Mallory 150 Series capacitors - 125° C, USA made
Orange Drop 715P & 716P
Silver Mica
Vishay
Sprague Atom capacitors - Made in USA
Film capacitors
Metal film (low noise) resistors
F&T/Mersen 500V Series A and LF Electrolytics - Made in Germany
JJ Electronic 500V, Low ESR, low impedence- Made in the Slovak Republic
We prefer MIL-Spec parts due to their stringent quality requirements, consistency, and high temperature and high vibration performace. Most wire, cable, and resistors used in Texas Tone amps are MIL-Spec. Our founder spent years working for an RCA parts distributor, and later led the effort to obtain ISO 9001 certification and garner high scores from major aerospace and defense contractors for inteconnect devices. The value of quality cannot be overstated.
MIL-W-22759/16 - ETFE insulated wire - 600V 150° C rating
MIL-R-10509F - Metal Film Resistors: High precision, low noise, high temerature (155° C).
NASA-STD-8739.3 for turret boards subjected to vibration and high temperature