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IMPORTANT SAFETY INSTRUCTIONS

Please follow the instructions below so as not to damage the unit.

SHIFT LINE does not accept responsibility for any damage caused by not following these instructions.

When transporting or storing the unit at temperatures below 0 C, it is necessary to keep the unit at room temperature for at least 1 hour 

before switching it on. When connecting the unit to other equipment, use cables specifically designed for this type of connection. Do not 

use faulty or damaged cables. 

DANGER! HIGH VOLTAGE!

DO NOT DISASSEMBLE THE UNIT ON YOUR OWN! DO NOT SWITCH ON AN OPENED-UP UNIT! DO NOT SWITCH ON 

THE UNIT IF THE 12AX7  TUBE IS NOT INSTALLED.

CONNECTING AN EXTERNAL POWER SUPPLY ADAPTER: 

Plug in the external power supply adapter only after assembling the whole signal chain! Before using the adapter, make sure that its body, 

connecting cable and plug function properly and are not damaged. First, plug the adapter into an electric mains socket, then connect the 

adapter’s low-voltage jack to the power supply input on the unit’s left side panel.
DISCONNECTING THE EXTERNAL POWER SUPPLY ADAPTER: 

Unplug the external power supply adapter from the electric mains socket, then disconnect the adapter’s low-voltage jack from the power 

supply input on the unit’s left side panel. 
REPLACING THE TUBE: 

Disconnect the unit from the power supply and wait at least 3 minutes. Remove the 4 screws holding the unit’s back panel. Take out the 

buffer holding the tube in place. Remove the tube by gently rocking it from side to side; do not apply any extra force! Insert the new tube 

(12AX7 or its analogue). Put the buffer back in its place. Close the back panel and secure it in place with the 4 screws. 

SPECIFICATIONS: 
Tube type:

 12AX7

Memory card type:

 microSD

IN:

 6,3 mm, mono, unbalanced, -20 dB, 1 MOhm input impedance 

THRU:

 6,3 mm, mono, unbalanced, -20dB, 1 kOhm output 

impedance 

SEND:

 6,3 mm, mono, unbalanced, -10dB, 1 kOhm output 

impedance 

RETURN:

 6,3 mm, mono, unbalanced, -10dB, 1 MOhm input 

impedance 

OUT:

 6,3 mm, mono, unbalanced, +20dB, 1 kOhm output 

impedance 

BALANCED OUT:

 XLR, mono, balanced, +10dB, 1 kOhm output 

impedance 

AUX:

 3,5 mm, stereo, unbalanced, 0dB, 10 kOhm input impedance 

PHONES:

 3,5 mm, stereo, unbalanced, +10dB, 10 Ohm output 

impedance

POWER IN:

 12v DC 650mA, negative tip, 2.1/5.5 mm diameter. 

Use only regulated power supply units.

 

Dimensions (LxWxH):

 122x102x55 mm (4.8x4x2.2”)

Unit weight:

 480 g (1.06 lbs)

PSU weight:

 120 g (0.26 lbs)

DELIVERY SET:

Olympic MkIIIS preamplifier;
12V DC 1000mA PSU with 4 changeable plugs;
User guide.

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