Säljes 25 apr Stockholm

Matamp 1224

Mått 555, 290, 260. Provspelas i Handen, kan köras ut inom Stockholmsområdet.
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Specification:

Helrörs gitarrförstärkare.

3x 12AX7 preamp tubes.
4x 6V6GT power tubes.
Triode/pentode switch
Effect loop
A-AB class switch
Controls: Voice, Drive, Reverb, Bass, Middle, Treble, Presence, Master
Tube driven spring reverb.
Class A/AB and 2 or 4 power tubes switch.
Impedance selector 4, 8 and 16 Ohm.
Dimensions: 56 x 27 x 31 [cm].
Weight: 22 [kg].

Matamp från 2005. Troligen en custom 1224 tillverkad efter MK1 men innan MK2.

The 1224 derives it name from the output valve switching system which allows the player to select between 1 or 2 valves in class A, and 2 or 4 valves in class AB. With the new easy to use 1224 rotary control in place of the push button matrix the player can simply select how many output valves to use and what class they are working in. There is also a triode pentode half power switch which is located on the rear of the chassis. The result of the switching allows the amplifier to operate at different power levels from a mere 2.5w to 50w.

There were always two versions of 1224 available, fixed or cathode bias. The new 1224 now features dual mode output operation meaning the 1224 can be operated in either fixed or cathode bias. By simply plugging into the lower input jack the amp operates cathode bias and into the higher input the amp runs fixed bias. This combined with the 1224 output valve switching allows the player to dial in the perfect volume level, balance of output valve distortion as well as all important feel.

The reverb is much improved over earlier versions and features a 6V6 driven spring reverb tank with choice of either two or three springs. The reverb has moved to a position in the circuit just after the tone stack to give classic spring reverb sounds.

The voice control acts as a high pass filter which sets the overall character of the preamp and overdrive tone. This can be controlled via the foot switch and is useful for matching between different guitars featuring single coils or humbuckers.

On the rear panel you will find connections for foot switch (reverb), speaker outputs and Preamp out and power amp in form a passive effects send and return.The 1224 can run into 16, 8 and four ohms with two sockets provided for both 4 and 8 ohm to drive multiple speaker cabs.