Originally designed for critical listening in a mastering studio, the EA4 hybrid amplifier features NOS Siemens E88CC tubes in the first gain stage, driving premium English MOSFET power transistors for truly impressive output (405 watts/ch RMS). Highly articulate, but at the same time warm and remarkably musical. This exceptional amplifier can be listened to for hours without fatigue, and can bring back the often missing emotional connection that other large solid-state amplifiers have sacrificed in the quest for sheer power.








Stereo Hybrid Amplifier

8 ohm - 275 wpc
4 ohm - 405 wpc * (highest power hybrid in production)
THD < .07
Input Sensitivity: 1v
Hum and Noise - 90dB
Damping Factor > 300

Features: Three descrete power supplies | All aluminum chassis | Solid copper binding posts | Gold plated RCA & XLR inputs | 12 gauge power cable

Weight: 55 lbs.

Specifications subject to change

$7500 (polished aluminum or in black)




Studio Electric loudspeakers are warranted for two years from date of manufacture. In most cases, the warranty is transferable.


How to Buy

We sell direct. But we also have a dealer program. Please inquire.

Lead Times / Terms

Though we do stock some finished units, normally we build your speakers when ordered. M1 and FS1 speakers can usually ship in 3-4 weeks. T2, T3 speakers and EA4 amplifiers will take 10-12 weeks. A 50% deposit is required on all custom builds.

Get in Touch

  • Phone:
    USA 801-450-0633
  • Email:
  • Address:
    1740 S 740 W Salt Lake City, UT 84104