Gainlab Audio - Dictator


INPUT: 2 x Balanced XLR
OUTPUT: 2 x Balanced XLR

Max. Input: +22dBu
input impedance: >10Kohm

Frequency response: 20Hz-20Khz +/- 1dB

Size: 483x280x89
Weight: 4.2 Kg

Mains: 230V AC (EU), 110V AC (US)

Max. Output: >26dBu
Output impedance: <65ohm

THD+N (0dBu): <0.3%




Gainlab Audio - Dictator


GLA-TC1, Dictator User Manual

It is the user’s manual for the Dual Pentode Vari-μ Compressor in English.

GLA-TC1, Calibration Manual

Each element of the procedure that we described in this document assumes a user with professional qualifications or equivalent knowledge.

GLA-TC1, Power Supply Check

Each element of the procedure that we described in this document assumes a user with professional qualifications or equivalent knowledge.

FAQ and troubleshooting

– The mains is not connected.
– The IEC socket switch is not switched on.


– Check the mains connection.
– Check that the mains voltage is present.
– Switch on the IEC connector switch.
– Replace the mains cable.
– Disconnect from the mains and check the fuse on the IEC connector (replace if burned out).

– The switch under the red LED is in the down position.
– Inadequate mains voltage.


– Set the switch below the red LED to the upper position.
– Check the mains voltage level at the operating site.
– Check that the mains voltage requirement of the device is corresponds to the voltage what is available at your location.

– Voltage fluctuation on the mains network.
– Inadequate mains voltage


– Check the mains voltage and whether it is suitable for your device. (You can read the required voltage on the backpanel’s serial label.)
– Eliminate voltage fluctuations. (Use another outlet or voltage conditioner.)
– Replace the fuse.

– It is normal on this type of equipment, it does not affect the operation of the device.

– The charged elements in the vacuum tubes can mechanically vibrate, changing the distance between the elements, producing charge flows in and out of the tube in a manner identical to a capacitor microphone. A system sufficiently susceptible to microphonics could experience audio feedback, and make noises if jarred or bumped.

– Be sure to avoid hitting or dropping the device.

– If the phenomenon is extreme, it may be necessary to replace the tubes.

Case 1 – It also happens in the bypass position.

– The source signal levels do not match on either side.
– The connecting cables are defective.

Case 2 – In the bypass position, both signal levels are the same.

– The device must be recalibrated. (See the Calibration Manual at the Downloads section.)
– Vacuum tubes are worn and need to be replaced.

-Most of the time it is a “ground related” noise.

– Professional audio equipment intended for use with balanced lines may have a ground lift switch for the cable shield. The ground lift switch eliminates unwanted hum and buzz by interrupting the ground loops between equipment, preventing current flow along the cable shield between two devices. 


– Use the ground lift switch at the back on the device.

– The peculiarity of the valve architecture is that it may be need to recalibrate the equipment over time during the life of the tube.

– Follow the steps in section 9 of the Calibration Manual to correct the phenomenon. If you do not have the necessary knowledge to carry out all of the operations properly, please do not attempt any modification inside the device, as you may be exposed to the risk of electric shock or damage of the equipment. 

Do you have another question?

SOUND SAMPLES (24bit 44,1Khz PCM)


Ben T Kadar

Promise Me (Shower Thoughts)

Jazz Friends

Niki's Song (First)


KREALA (cover)


Sound On Sound Magazine’s Dictator Review

A detailed Dictator review in the December issue of Sound On Sound Magazine
Dictator Test Sound On Sound Magazine

Wytse Gerichhausen’s Video Review

Our dictator at the White Sea Studio.

Glenn Fricker’s Video Review

Our dictator at the Spectre Sound Studios, with samples.

Dictator, KMR UK Virtual Demo Room Video

Dictator Compressor demo video by KMR UK. (No talk)

Barnabas Hidasi’s Dictator Article

The author is a hungarian, multi platinum award winning recording and mixing engineer, music producer.

Dictator Unboxing Video

Unboxing video by White Sea Studio, with samples
Use your Gainlab Audio equipment with Session Recall software! We add a free device definition code for each of our products.

Session Recall is an application designed to save the settings of analog devices without memories. It will allow you to save complete configurations of one or more devices into sessions that you can recall at any time. Whether you are a musician, a composer, or an audio engineer, Session Recall will flawlessly integrate into your workflow and will save your precious time.