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Power amplifiers stereo — VTL ST-85
Description, images, technical data and specifications
VTL ST-85
Image source — © VTL
The ST-85 is a tube stereo power amplifier from VTL, sitting below the ST-150 with a more modest, single-mode power output. The ST-85 brings VTL's considered engineering to dedicated stereo power amplification.
Key specs that matter
Input sensitivity is 680mV, with input impedance at 100,000 ohms single-ended. Output power is 60W into 8 ohms. Signal-to-noise ratio is 95dB. At 400 x 300 x 180mm and 25kg, the ST-85 maintains a manageable stereo power amplifier chassis reflecting VTL's considered American engineering standards.
Sound and use context
Expect the warm, richly textured character tube amplification is broadly celebrated for, with the strong 95dB signal-to-noise figure consistent with VTL's broader considered engineering philosophy.
Pairing
VTL's own preamplifier catalogue offers natural, brand-coherent pairings within the same broader tube-informed catalogue.
Alternatives
VTL's own ST-150 offers a considerably more powerful, dual-mode alternative within the same broader catalogue.
Key specs that matter
Input sensitivity is 680mV, with input impedance at 100,000 ohms single-ended. Output power is 60W into 8 ohms. Signal-to-noise ratio is 95dB. At 400 x 300 x 180mm and 25kg, the ST-85 maintains a manageable stereo power amplifier chassis reflecting VTL's considered American engineering standards.
Sound and use context
Expect the warm, richly textured character tube amplification is broadly celebrated for, with the strong 95dB signal-to-noise figure consistent with VTL's broader considered engineering philosophy.
Pairing
VTL's own preamplifier catalogue offers natural, brand-coherent pairings within the same broader tube-informed catalogue.
Alternatives
VTL's own ST-150 offers a considerably more powerful, dual-mode alternative within the same broader catalogue.
Specifications
Model name
ST-85
Input sensitivity (mV)
680
Input impedance (balanced) (Ω)
N/A
Input impedance (single-ended) (Ω)
100 000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
60
Output power (4Ω) (W)
N/A
Gain (dBu)
N/A
Frequency response low +/- 3dB (Hz)
20
Frequency response high +/- 3dB (Hz)
20 000
Signal to Noise Ratio (dB)
95
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
N/A
Max power consumption (W)
N/A
Damping factor
N/A
Dimensions (mm)
400 x 300 x 180
Weight (kg)
25
Official link
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