The Fender tube amp resource

Date, identify and value any vintage Fender tube amp.

Built on Greg Gagliano’s foundational research and two and a half decades of community knowledge. No appraisals, no sales — just the methodology and the reference data to verify what you have.

  • 34 models in the speaker chart
  • 1946→ production years covered
  • 4×/week new research
Fender Super Champ X2 combo amplifier front panel Just published · Model guide
May 12, 2026 · 32 min read

Fender Super Champ X2 Guide

The Fender Super Champ X2 is the modern hybrid tube/digital practice amp that bridged Fender’s traditional tube lineage with the modeling-amp era. Fifteen watts of tube output through two 6V6 power tubes and one 12AX7 preamp, paired with a digital amp modeling front end providing 16 amp voices and 15 effects. Produced from 2012 through...

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Foundation reference · 8,500 words

Fender Tube Amp Serial Number Guide

Date, identify & value your vintage amplifier — 1946 through current production. The complete methodology behind every model guide on this site.

  • Letter-prefix decoder for modern amps (1990 → present)
  • Tube-chart code lookup and transformer methodology for pre-1990
  • Circuit identification: AB763, AC568, AB868, transitional Showmans
  • Original-speaker reference chart for 34 models — sortable
  • CBS-era quality anomalies and the famous OA/OB January-1966 misprint
  • Current market value ranges by era, cross-verified with completed sales
Model guides

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Each guide covers model history, dating specifics, circuit variants, original speakers, and current market value. Phase 1 ships first — more guides land over the next two quarters.

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A research desk built on the work of 20th Century Guitar Magazine.

TCguitar continues the tradition of careful, primary-source vintage-amp scholarship — built on archival catalogs, schematics, and the documentary work of Greg Gagliano.