Inward Connections is celebrating 20 years of their VacRac limiter design with a limited edition TSL-4 Anniversary Edition. This unit features all NOS tubes, a battleship grey finish like the original VacRac system and is limited to just 20 units worldwide.

Inward Connections first created the TLM-1 (Tube Limiter Module) for their Vac Rac modular processing system. The TLM-1 was highly favored by many of the world's top recording engineers and when the modular Vac Rac was discontinued, the TLM-1 topology found life as a new standalone, dual-channel unit. Thus, the TSL series was born.

The Inward Connections TSL-4 Vac Rac is the latest incarnation of this classic design. It adds new features without altering the sonic signature engineers have come to revere - Smooth limiting presented with the euphonic character and warmth of tubes. If you want to control the transients of vocals, guitars, bass or the mix bus, without tweaking a whole bunch of controls, the TSL-4 is exactly what you've been looking for.

Features per channel:

40-Detent Gain Makeup Control - variable control of 14dB of output gain

40-Detent Gain Reduction Control - variable control of up to 40dB of gain reduction

Bypass Switch - engages or disengages the gain reduction element

Output Switch - Assigns meters to Gain Reduction or Output

Hi-Pass Filter Switch - engages 250Hz high pass filter within the gain reduction circuit

Link Switch - Links opto cells of both channels for stereo operation

Large 3"x3" Illuminated VU meter

Zero trim to calibrate the meter in Limit mode

Tubes used in both input channels: Input stage - 6072A, Output stage - 12BH7A

Power Supply: Pure Class A high voltage tube design with AC Voltage selector

Unit dimensions: 3 rack space. 5.25" Height, 19" Width, 11.5" Depth

Rugged, well-ventilated, 3U steel chassis design

Classic vintage look

Transformer Balanced, Line Level, XLR inputs and outputs

Specifications:

Gain Reduction: up to 40db

Input Impedance: >100k ohms

Frequency Response: +/- 0.5 dB @ 20Hz to 20KHz

Output Signal to Noise Ratio: -85dB

THD + Noise:

.015% @ 20Hz (0dB ref.)

.085% @ 20KHz (0dB ref.)

.15% @ 20Hz to 20KHz (+30dB ref.)

Maximum Input Level: +20dB

Maximum Output Level:

+20dBm @ 600 ohms

+34dBv @ 10K ohms