Summit Audio TLA-100A Tube Leveling Amplifier

Summit Audio

(1 review) Write a Review
Product Code: 9999-06254
Adding to cart… The item has been added
We Need A Few Days

This item must be ordered in from the manufacturer. Give us a few days to get it here and heading your way. Go ahead and place your order and we will let you know as soon as it ships. If you have a deadline then please contact us before placing the order so we can meet your expectations.

Got Questions? Need Support?

888-228-4530 Contact Us!

The Summit Audio TLA-100A Tube Leveling Amplifier is a hybrid of technologies containing both vacuum tube and solid state components. This combination of old and new technologies produces an incredibly warm and smooth sounding compression device without the inherit disadvantages of the older designs.

The Summit Audio TLA-100A Tube Leveling Amplifier has been made for over 20 years and produces a sound that remains a much sought after quality that is used on literally thousands of records and in live sound venues across the world. The harmonious blend of old and new technologies produces the incredibly warm and smooth sound of vacuum tubes in a compression device that does not have the inherent disadvantages of older designs.

Compressing in a musically satisfying way is easy with the Summit Audio TLA-100A; the incredibly forgiving circuit design makes it almost impossible to make it 'pump and breath'. When fast transient signals are being sent to the Summit Audio TLA-100A, the unit reacts quickly both in attack and release, when the signal is more legato, the attack and release times automatically react more slowly resulting in a set-and-forget compressor that always sounds right with a minimum of knob fiddling. Try it on vocals and bass, also great for kick drum and guitars. The Smmit Audio TLA-100A really shines for tracking and mixing individual instruments and is linkable with another Summit Audio TLA-100A for stereo signals.

Summit Audio TLA-100A Tube Leveling Amplifier Features

  • Ease of operation
  • "Soft Knee" characteristics
  • Switch selectable attack and release settings
  • Side chain access
  • Stereo coupling capability
  • Balanced input
  • 990 Balanced output stage
  • hand crafted in the USA

Summit Audio TLA-100A Tube Leveling Amplifier Specifications

  • Input:
    • Type: Electronically balanced or unbalanced
    • Input Impedance: 20k O
    • Maximum Input Level: +26dBm
  • Output:
    • Type: Balanced or unbalanced using 990 operational amps
    • Output Impedance: 75 O
    • Recommended Output Load: 600 O
    • Maximum Output: +25dBm (+4dBm corresponds to 0 VU)
  • Components:
    • 1 x 12AX7A Vacuum Tube
    • 2 x high reliability 990 operational amplifiers
    • 13 x integrated circuits
    • 3 x transistors
    • 1 x compression cell
  • Panel Size: Standard 19” by 3.5” (two units of rack space)
  • Depth Behind Panel: 10.5” in addition to users I/O cabling
  • Power: 35 Watts, 115-230 Volt, 50 or 60 Hz
  • Fuse: .5 Amp for 115 volt & .25 Amp for 230 Volt
  • Shipping Weight: 16 Lbs.

Summit Audio TLA-100A Tube Leveling Amplifier Includes

  • Summit Audio TLA-100A Unit
  • User Manual
  • Power Cord
  • 3 Year Warranty

1 Review Hide Reviews Show Reviews

  • 5
    creamy smooth limiting
    christopher smith

    This is my go to limiter for tracking vocals. I tried the la-2a and like this better. Its very easy to dial in so you will be up and running very quickly. If you give it to much gain it will bring up the noise floor, but your pre should have plenty of gain so I don't use to much gain. I haven't used it on anything but vocals so I can't comment on anything else, but I've heard engineers praise this limiter on guitars as well.

What We Think


The Summit Audio TLA-100A is a fantastic value compared to it's closest relative in the tube opto-leveling world. In fact, price is not the only determining factor as to why the Summit is chosen time and time again as the vocal limiter of choice by legendary engineers like Al Schmitt. The TLA-100A stands out from the crowd in that it will retain the high frequency clarity where other tube-opto designs tend to muddle the sound a bit up there. And there is a lot of flexibility with the TLA-100A - Stereo linking, ability to adjust attack and release times, side-chain insert, and a transformerless path that retains an open and clear sound while smoothing vocals, bass, and other elements that can really benefit from some opto-compression/limiting. The TLA-100A comes highly recommended from Front End Audio!

Front End Audio, Your Ultimate Pro Audio Dealer

Got questions? Call us at 1-888-228-4530 we are here to help!