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Inward Connections TSL-4V Vac Rac w/ NOS Tubes – No Longer Available

Stereo limiter with smooth, tube-drenched mojo used by top mix engineers outfitted with hand-selected new old-stock tubes
MFR# TSL-4V

Product Description

Looking for some magic for vocals, bass, guitar, or the mix bus? Pay attention to the TSL-4V Vac Rac stereo tube limiter, the bread and butter of Inward Connection's line of boutique, made-in-LA gear. Loaded with Cinemag transformers, this latest version of the Vac Rac series adds new features without changing the sonic signature engineers have come to revere. You'll be armed with just the right amount of transient control, without having to tweak a bunch of knobs, giving your tracks a buttery-smoothness you'll have to hear to believe.

  • No-compromise design with dual-mono or stereo operation
  • The latest incarnation of a mix engineer's favorite
  • Inward Connections: boutique gear handmade in LA


No-compromise design with dual-mono or stereo operation
Top to bottom and front to back, the Inward Connections TSL-4V Vac Rac is designed and outfitted with premium components and the features pros want from a limiter. The TSL-4 Vac Rac has a link switch, connecting the opto cells of both channels for stereo operation. Both the Gain Makeup and bypassable Gain Reduction controls are 40-detented, offering 14dB of output gain and 40dB of gain reduction respectively. The best of the rest? There's a switchable 100Hz highpass filter, large 3"x3" illuminated VU meter (switchable Gain Reduction or Output), and Cinemag transformer-balanced XLR I/O, all packed into a rugged, well-ventilated 3U steel chassis with a vintage vibe to boot.

The latest incarnation of a mix engineer's favorite
Ever since the Vac Rac series hit the market two decades ago, it's grabbed the attention of high-profile mixers. This latest version gives you the same famously smooth limiting, with all the euphonic character and tube warmth that the Vac Rac reputation has been built on.

Inward Connections: boutique gear handmade in LA
Initially one of LA's best-kept secrets, the word about Inward Connections has been sweeping the globe. After all, when you hear guys like Chris Lord-Alge and Eddie Kramer swearing by a brand, you know to pay attention. Dreamed up and designed by Steve Firlotte, a well-known LA tech, the Inward Connections line offers premium options for the discerning ear, all meticulously handmade in Firlotte's Los Angeles workshop.

The Inward Connections TSL-4V Vac Rac is the TSL-4 equipped with hand-selected and factory-installed NOS tubes in the audio path. GE JAN 6072A’s and GE 12BH7A’s give the TSL-4V its rich, soulful yet articulate voice. It's tone that many feel can only come from tubes of the past. The TSL-4V is a special order item and subject to the availability of tubes required.

Inward Connections TSL-4V Vac Rac features: 

  • 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: 3u 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
  • Output impedance: 600 ohms transformer balanced output

Product Specifications

Condition New
Tube or Solid State Tube
Channels Dual-Channel
Chassis 19-inch Rack-mount
Rack Spaces 3u
Digital I/O No

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.