Marshall SV20H 20-watt Plexi Amp — Anatomy of Guitar …
Marshall amps have a very focused sound that cuts through a mix. To me, overdriven single notes or power chords don't sound better than on a Marshall. Tubes. The SV20H comes with three ECC83 tubes and two EL34 tubes. The same tube layout as the Marshall 1959 SLP 100 watt head. Minus two EL34's that is.