WORKING CONDITION: Very Good. The gain reduction works properly, and the channel ballistics are matched. These units provide several decibels of tube-driven make-up gain, and can be pushed into extreme levels of compression. Both tubes were checked, and they are fresh. Meter and light work nicely. 

PHYSICAL CONDITION: Very Good. The metalwork is solid, and the faceplate, iO jacks, VU meter, and knobs are in very good condition.

INVENTORY #59336

BRAND: Summit Audio

MODEL: TLA-100A Tube Leveling Amplifier

FUNCTION: Pro Audio Limiter

PRODUCT DESCRIPTION: This listing is for a Summit Audio TLA-100A Tube Leveling Amplifier. The Summit Audio TLA-100A Tube Leveling Amplifier is a legendary single-channel hybrid compressor that has been an industry standard in top-tier recording studios and live sound rigs since its introduction in the mid-1980s.

It is highly revered for its smooth, program-dependent compression characteristics that mimic classic optical limiters like the Teletronix LA-2A, but with the distinct advantage of faster, switchable attack times to handle rapid transients

SPECS:

• Serial # 0212866
  
• Date of Manufacture: 03/01/1999
• Hybrid Design: Combines a single hand-selected 12AX7A vacuum tube with high-performance solid-state components. This approach delivers classic tube warmth and rich harmonic coloration without the reliability and noise drawbacks of vintage pure-tube units.
• Signal Path: Employs a transformerless signal path and a 990 balanced output stage to maintain excellent clarity and low distortion. 
• Program-Dependent Compression: Features a "soft knee" transition where the compression ratio and threshold automatically scale based on the incoming signal. It controls audio dynamics with a gentle but authoritative touch, gluing tracks together seamlessly.
• Gain Reduction & Gain: Two large, continuously variable front knobs control the amount of compression (acting like a threshold) and the makeup gain.
• Attack & Release Switches: Three-position toggle switches allow you to choose between Fast, Medium, and Slow responses. The attack time ranges from 180 microseconds to 100 milliseconds, giving it significantly more flexibility than a fixed-time optical limiter. 
• VU Meter Select: A toggle switch flips the prominent VU meter to monitor either output levels or active gain reduction. 
• Bypass: A dedicated toggle allows for instant A/B comparison against the uncompressed signal.

ACCESSORIES INCLUDED: Includes power cable

UNPACKAGED WEIGHT: 13 lbs.

UNPACKAGED DIMENSIONS: 19" x 4" x 13"