M300 is a Dual Engine Processor with high quality Reverbs and Effects. The M300 Dual Engine Processor covers virtually any effects application, from PA and Live to Studio and Club Installations by combining a dedicated true Stereo Reverb engine and a Multi-purpose Effects engine.

The T.C. Electronic M300 is a 1-rack-unit multi-effect processor featuring two separate stereo processing units: a multi-effect engine, and a dedicated reverb engine. This was T.C.'s entry-level unit, but offered great quality and - most of all - ease of programming, with processing algorithms ported from their more expensive and prestigious effect racks.

The M300 is without a doubt a classy processor! Very clean, sounds nice, and is extremely easy to use ). This is a very much hands-on processor - refreshingly there are no menus, no jungle of parameters. It is a useful unit that does its job, and it's very fast to program using the front panel knobs.

This can work both on analog and digital inputs - a bonus if you have gear with digital outs. From the left, there is an input pot, a dry-wet knob, and an effect balance control. The obligatory and useful "bypass" button is right between these last two knobs.

Continuing to the right, we encounter the first engine block, so called "Multieffect". There are many to choose, including excellent and clean delays, a fantastic "wooshy" vintage phaser, classic chorus/flangers, tremolo, and so on. The second block is called "Reverb", and offers a variety of spectacular reverbs, from the trademark T.C. Classic Hall, to living room, vocal and drum box, spring, classic plates, and more. Both engines have a few knobs that you can use to alter pretty dramatically the characteristic of each effect.

Digital Input and Output

RCA Phono (S/PDIF)


S/PDIF (24 bit), EIAJ CP-340, IEC 958

Sample Rates

44.1 kHz. (48 kHz only @ Digital Input)

Processing Delay

0.08 ms @ 48 kHz

Frequency Response DIO

DC to 23.9 kHz ± 0.01 dB @ 48 kHz

Analog Inputs

1/4" phone jack, mono sense

Impedance, Bal / Unbal

21 kOhm / 13 kOhm

Max. / Min. Input Level @ 0 dBFS

+24 dBu / 0 dBu

Sensitivity Range @ 12 dB headroom

-12 dBu to +12 dBu

A to D Conversion

24 bit, 128 x oversampling bitstream

A to D Delay

0.70 ms / 0.65 ms @ 44.1 kHz / 48 kHz

Dynamic Range

typ < -92 dB, 22 Hz to 22 kHz


typ < -90 dB (0.0032 %) @ 1 kHz, -1 dBFS

Frequency Response

+0/-0.1 dB, 20 Hz to 20 kHz


typ < -100 dB, 20 Hz to 20 kHz

Analog Outputs

1/4" phone jack

Impedance Bal / Unbal

40 Ohm / 20 Ohm

Max. Output Level

+14 dBu

D to A Conversion

24 bit, 128 x oversampling bitstream

D to A Delay

0.68 ms / 0.63 ms @ 44.1 kHz / 48 kHz

Dynamic Range

typ < -105 dB typ, 22 Hz to 22 kHz


typ < -97 dB (0.0014 %) @ 1 kHz, +13 dBu

Frequency Response

+0/-0.5 dB, 20 Hz to 20 kHz


typ < -100 dB, 20 Hz to 20 kHz

Complies with

EN 55103-1 and EN 55103-2

Certified to

IEC 65, EN 60065, UL6500 and CSA E60065 CSA FILE #LR108093

Operating Temperature

32° F to 122° F (0° C to 50° C)

Storage Temperature

-22° F to 167° F (-30° C to 70° C)


Max. 90 % non-condensing

Control Interface

In/Out: 5 Pin DIN


1/4" phone jack


Anodized aluminum front Plated and painted steel chassis


2 x 7 segment + LED’s


19" x 1.75" x 4.2" (483 x 44 x 105.6 mm)


3.3 lb. (1.5 kg)

Mains Voltage

100 to 240 VAC, 50 to 60 Hz (auto-select)

Power Consumption

<15 W

The Gear Rack

Share this page

Suppliers are ready and waiting! Get speedy processing when you book now.