GROOVE TUBES GT EL84-S Medium Zestaw 4 Lamp

Groove Tube (555-0113-583) EL84 Quartet with higher power and warmer tone. Most common low-power pentode, popularized in early Vox AC30 amps. Rediscovered by Matchless amps and now currently used by nearly every tube amp company. Quick, soft overdrive distortion, great for recording.