process, they are hand matched in sets with tolerances 10x tighter than standard off-the-shelf tubes, thus ensuring the finest audio quality possible.
With its auto-bias design, the VT80SE can also be used with KT120 or KT150 output tubes and the circuit will adjust immediately when a new tube is installed. Protective fuses are installed for each output tube and can be replaced if the need ever arises. What sonic improvements will you hear with the VT80SE? As their Warren Gehl said, “More music!” Tonal color, detail, dynamic swing and purity are all improved, along with a bigger and more robust presentation. The music gets better, in every way.
Aside from the beautiful curves of the KT150 tubes, the only other way to distinguish the SE from the original VT80 is by a small sticker on the rear panel. Nothing else needed to change. The existing (optional) ventilated tube cover can be used with the taller KT150 tube set, there is still sufficient space to breathe. Hear for yourself how good your system can sound with the new VT80SE, it will make a tube-lover out of anyone who loves music.
Technical Specifications
POWER OUTPUT: 75 watts per channel continuous from 20Hz to 20kHz. 1kHz total harmonic distortion typically 1% at 75 watts, below 0.05% at 1 watt. (Note that actual power output is dependent upon both line voltage and ‘condition’ i. e.: if power line has high distortion, maximum power will be affected adversely, although from a listening standpoint this is not very critical.)
POWER BANDWIDTH: (-3dB points) 7Hz to 60kHz.
FREQUENCY RESPONSE: (-3dB points at 1 watt) 0.7Hz to 80kHz.
INPUT SENSITIVITY: 1.4V RMS BAL for rated output. (25dB Bal gain into 8 ohms.)
INPUT IMPEDANCE: 300K ohms Balanced (150K ohms SE)
OUTPUT POLARITY: Non-inverting. Balanced input pin 2+ (IEC-268)
OUTPUT TAPS: 8 ohms, 4 ohms
OUTPUT REGULATION: Approximately 1.0dB 8 OHM LOAD TO OPEN CIRCUIT (Damping factor approximately 8)
OVERALL NEGATIVE FEEDBACK: 15dB
SLEW RATE: 10 volts/microsecond
RISE TIME: 4.0 microseconds
CHANNEL SEPARATION: 112dB
HUM & NOISE: –84dBV weighted, 8 ohms tap
SIGNAL TO NOISE: 112dB
CONTROLS: Power on/off, auto shut-off on/defeat, Input BAL/SE, RS232, 12V trigger
AMBIENT AIR TEMPERATURE: 30° C (86° F) maximum ambient air temperature
POWER SUPPLY ENERGY STORAGE: Approximately 350 joules
POWER REQUIREMENTS: 100-125VAC 60Hz (200-250VAC 50Hz) 410 watts at rated output, 500 watts maximum, 230 watts idle. Sleep power < 1 watt
TUBES REQUIRED: 2 – Matched pair KT120 – Power Output; 2 – 6H30 Driver
DIMENSION: width 19” (48.3 cm) height 10.33” (26.2 cm) depth 18.45” (46.8 cm) to chassis , 19.40” (49.3 cm) to terminals
WEIGHT: 45.7lbs. (20.7 kg) Net; 60.5 lbs. (27.4 kg)
