The Tube Amp Doctor 6L6GCM-STR Redbase represents the modernized version of the iconic 6L6 beam pentode design. The 6L6GCM Redbase combines the enormous robustness of the Philips/Sylvania 6L6GC with the high-quality sound characteristics of the RCA-manufactured 6L6GC. The tube quartet from the Redbase series consists of two matched power amp tubes and has been subjected to multiple noise, microphony and shock tests.

The Tube Amp Doctor 6L6GCM-STR Redbase quartet at a glance:

• Power amp tube quartet
• Suitable for 6L6 power amps
• Octal socket (8-pin)
• Robust construction and best sound characteristics