• Act Audio Vacuum Tube Amplifier 6C33
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  • Act Audio Power Terminal

Vacuum Tube Amplifier 6S33

The vacuum tube amplifier 6S33 is a single ended pure class A, 15-Watt monoblock with an indirectly heated triode. It is a high-end audiophile device. The driver tube is a 6N6P tube. The monoblock has a fixed bias, and point to point internal wiring. The output tube is a 6S33S-V. The output transformer has a double-C core. The power line transformer is toroidal.

6C33 Picture 1

The vacuum tube monoblock amplifier 6S33 has AuriCap, ClarityCap capacitors and CMC gold plated connectors at the output. The whole of the chassis surface is copperised and finished by plastification. The device features a bias control mill-ampere gauge.
This is a handmade and unique product. All parts have been carefully selected.

6C33 Picture 2

Technical specification

  • Characteristics:
    • Driver tube: 6N6P
    • Output tube: 6S33S-V
    • Anode voltage: 120 V
    • Output power: 15 W RMS
    • Frequency response : 20 Hz–20 kHz/±0.5 dB
    • Signal to noise ratio: > 80 dB
    • Sensitivity: 5 V RMS
    • THD: < 1% (at maximum gain)
    • Bias: fixed bias
    • Output impedance: 4 Ω
    • Input impedance: 100 kΩ
    • Input sensitivity: 1 V RMS
    • Heater voltage: 6.3 V
    • Power consumption: 160 W
    • Voltage: 230 V–50/60 Hz
    • Fuse: SB 1.25 A/250 V
  • Dimensions:
    • Width: 480 mm
    • Height: 140 mm
    • Depth: 240 mm
    • Weight: 16 kg