McMartin LT-504 Vtg. PA Power Amplifier USA Made- 4x TR-136A & 2x MP-102

- Best for collectors or technicians familiar with vintage McMartin gear seeking a USA-made power amp for restoration or parts; condition and functionality unknown beyond power-up test.
- Sold as-is with unknown service history; only power-up was tested, so expect potential internal issues, component wear, or need for professional servicing before reliable use.
- Seller filippie has 13,472 feedback ratings at 99.8% positive over multiple years, establishing consistent transaction reliability.
- Shipping cost and delivery timing calculated at checkout based on your location; see eBay listing for current rates and handling speed.
- McMartin LT-504 power amp includes 4x TR-136A tubes and 2x MP-102 modules; exact operational condition of tubes and modules unknown.
- Before purchase, request or verify in photos that all four tubes and both modules are present and visually intact, and confirm eBay return policy covers your location.