Standard Audio Level-Or MK2 Anniversary Edition

500 series JFET limiter retaining the sound and vibe of the original but with some improvements and new features
MFR# Level-Or MKII Anniversary Edition
Standard Audio Level-Or MK2 Anniversary Edition
Standard Audio Level-Or MK2 Anniversary Edition Standard Audio Level-Or MK2 Anniversary Edition Standard Audio Level-Or MK2 Anniversary Edition Standard Audio Level-Or MK2 Anniversary Edition Standard Audio Level-Or MK2 Anniversary Edition Standard Audio Level-Or MK2 Anniversary Edition
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Please note: This item requires a 500 Series Rack for operation. Shop racks.

After 10 years of production and over 1,000 units sold, Stand Audio have decided that it is time to release a new version of the Level-Or that retains the sound and vibe of the original, but includes improvements and features suggested by customers over the years. For those not familiar with the original Level-Or, it is an aggressive JFET limiter and harmonic distortion generator inspired by the SHURE Level- Loc PA limiter from the 60s and 70s. The MK2 version takes the original concept to a new level with improved performance and added features making it an extremely versatile studio tool. To celebrate 10 years of smashing and crunching, the first run of the Standard Audio Level-Or MK2 is released as a limited “ANNIVERSARY EDITION” in black.


Lower Noise: Due to the aggressive nature of the circuit, a common issue with the original Level-Or was the noise present in Level mode. With extensive R&D and listen testing, Standard found a way to lower the noise considerably while remaining true to the tone and vibe of the original circuit. As a result the Mk2 noise floor is 12 - 15 dB BETTER than the original Level-Or.

Mode Switch – Switches between Level, Crunch, and Bypass modes.

  • Bypass Mode: Standard have included a relay based true-bypass.
  • Level Mode: Sound of the unit is dominated by an extreme JFET limiter. Use this mode to slam, squash, and pummel your audio signal.
  • Crunch Mode: Sound of the unit is dominated by distortion generated from a series of discrete transistor based, Class A amplifier stages. Use this mode to provide subtle saturation and harmonic enhancement all the way to heavier distortion and outright destruction of your audio signal.

LED Indicator – A dual color LED serves two functions. When the unit is in Crunch mode, the LED is red and in Level mode, the LED is green. While in bypass, the LED is off. While in Crunch or Level modes, the LED will get brighter according to how much compression (Level) or THD (Crunch) is occurring. This can provide helpful feedback to the engineer.

Speed Switch – Formerly, the speed switch provides two release times (fast/slow) while in Level mode, and was un-used in Crunch mode. Standard have expanded to a 3-way switch and added functionality that changes, depending on mode.

  • Level Mode: There are now 3 release times, FAST, MED, and SLOW. The FAST and SLOW settings are the same as the original, with the added medium time constant in between.
  • Crunch Mode: The speed switch now controls a 3-way low pass filter on the output. This can be very useful for reducing harsh, higher harmonics while distorting. When set to FAST, the filter is bypassed. When set to MEDIUM, the LPF is 15 kHz. When set to SLOW, the LPF is 8 kHz.

Instrument DI - The original Level-Or had a line input via a front panel 1/4” jack. While useful for interfacing with a drum machine or synthesizer, it was not useful for guitar, bass, or any other instrument level source. On the Level-Or Mk2, Standard have changed this to an instrument-level DI input.

DI MODES - The unit detects when a 1/4” jack is inserted and switches over to the DI input.

  • DI Bypass Mode: When the DI is used, putting the unit into Bypass mode sends the clean DI signal to the output of the unit. The unit functions as a clean DI with gain, no external amplifier required. The output control is active to adjust level as needed.
  • DI Crunch Mode: The DI signal is sent through the input gain stage and all controls work as normal including the filter switch.
  • DI Level Mode: The DI signal is sent to the limiter and all controls work as normal.

It is possible for the user to configure the front panel 1/4” input to be configured as a line input if desired.


A 100% enclosed steel chassis reduces the chance of electrical interference or noise from adjacent modules, gear, etc.


After delivering over 1,000 original Level-Or modules out into the world, the reliability of the design has been incredible. The Level-Or Mk2 ANNIVERSARY EDITION follows the same robust design approach and attention to detail


Additional Information

Condition New
Channels Single-Channel
Chassis Module
Module Type 500 Series
Module Slot Count 1 Slot

I bought two more Level-Or’s after my producer friend from Zagreb took the first pair with him. He and I have had multiple Porin-winning (Croatian grammy) albums and songs together. The obvious boost is for a drum subgroup, but I like to use them as a parallel kick-snare-bass subgroup (to spike choruses and breakdowns). Josh in Nashville was indispensable for customizing the shipping orders.

By Stonebridge M on November 27, 2018

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