ST-80

About the ST-80

The VTL ST-80 is a classic tube stereo power amplifier designed by David Manley under the VTL (Vacuum Tube Labs) brand. It is recognized for its utilitarian appearance, ease of biasing, and reliable performance. The amplifier uses EL34 output tubes, which are renowned for their musicality and smooth sound. The ST-80 is appreciated for its substantial power output compared to many vintage tube amplifiers, making it suitable for a wide range of speakers. It features a straightforward design with robust construction, including mil-spec circuit boards and large capacitor banks for stable operation. The amplifier is well-regarded for its ability to drive demanding loudspeakers and is often compared favorably to other vintage tube amps like the Dynaco ST70, with users noting its greater power output.