Preamplifiers — VTL TL7.5 Series III

Description, images, technical data and specifications

VTL TL7.5 Series III
Image source — © VTL

The new model has incorporated numerous technological advances, while retaining the best elements of the TL-7.5 platform. The proven advantages of the original system architecture include: a fully balanced differential design; a hybrid circuit that combines tubes in a gain stage to provide voltage linearity (less than 2 dB NFB) with a MOSFET buffer for greater current throughput; a high-resolution volume control; and a clean box/dirty box architecture with multiple precision controlled power supplies.

Specifications

Model name
TL7.5 Series III
Analog inputs (balanced)
4
Analog inputs (single-ended)
4
Analog outputs (balanced)
2
Analog outputs (single-ended)
2
Gain (dBu)
19.2
Input sensitivity (mV)
N/A
Output voltage (V)
30
Input impedance (balanced) (Ω)
50 000
Input impedance (single-ended) (Ω)
50 000
Output impedance (balanced) (Ω)
25
Output impedance (single-ended) (Ω)
25
Maximum output level (balanced) (dBu)
N/A
Maximum output level (single-ended) (dBu)
N/A
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
1
Frequency response high +/- 3dB (Hz)
100 000
Signal to Noise Ratio (SNR, unweighted) (dB)
N/A
Total Harmonic Distortion + Noise (THD+N) (%)
N/A
Dimensions (mm)
445 x 445 x 102 (Control chassis) + 445 x 445 x 153 (Audio chassis)
Weight (kg)
40.82
Official link
https://www.vtl.com/products/preamplifiers/tl7-5-series-iii-reference-preamplifier/