Inward Connections
  OPT1A Discrete Limiter

Inward Connections OPT1A Discrete Limiter for 500 Series

Using the legendary SPA690 discrete amp blocks, the Inward Connections OPT1A has the exact same Optocell gain reduction circuitry as the revered TSL-3 Vac-Rac tube limiter in a solid state 500 series format. Fully transformer balanced input and output, along with an all discrete design insure the sort of top quality audio you would expect from Inward Connections.

Features include
  • Gain reduction control
  • Zero adjust trim
  • Output level control
  • Hi-Pass filter: 250Hz for detector circuit
  • Bypass switch
  • LED lighted VU meter
  • VU meter output/reduction switch
  • Link switch
  • SPA690 all discrete legendary amp blocks
  • Optocell reduction circuitry identical to TSL-3 Tube Limiter
  • Balance input and output transformers
  • Fits standard 500 series slot configuration mechanically and electrically
Specifications
  • Gain Reduction up to 40dB
  • Input Impedance >100K ohms balance
  • Output Impedance 600 ohms balance
  • Frequency Response +/- 0.5dB@20Hz to 50KHz
  • Output Signal to Noise -95dB or greater
  • THD + Noise .01%@1KHz/+4dBu
  • Reserve Makeup Gain +15dB

Download Brochure

Testimonials

Christopher Portugal

"The OPT1A Limiter is the most recent addition to my wide complement of Inward Connections gear and it does an amazing job of steadying a vocal tracking – the 250 HPF on the detector circuit is crucial to the overall effectiveness of the OPT1A's sound."
Eddie Kramer

Legendary engineer/producer Eddie Kramer has worked with, among others, Led Zeppelin, Triumph, Kiss, Jimi Hendrix, The Beatles, The Rolling Stones, David Bowie, Spooky Tooth, Peter Frampton, Curtis Mayfield, Santana, Anthrax, Carly Simon, Loudness, and Robin Trower.