An amplifier transistor. I use it to play the harp on it but it's a guitarist friend gave it to me (after being rejected several times by other guitarists). Despite its size and weight (it has almost the same size as the valverstate 2000 ...) and the name of Marshall, I recommend for those looking for power (and his side, ca is not worth the quality of an amp Tube ).... Nice guy looking for his old blues ...

The settings are fairly simpas

Side connections, just two inputs (low / high), no headphone

Here are the instructions on the manual:
Master Volume 30 watt transistor

Sensibility: All controls than 0.35mV RMS
1.7V RMS maximum input level

Swing Tone: Bass 100Hz - 15dB
Middle 500Hz .... 25dB
Trebble 16dB (mid max)
42 dB (mid max)

Power output: 30 Watts RMS into 4 ohm load
IC and transistors built

Loudspeaker, Specially Designed 12 inch 70 watt RMS 4 ohm

Power requirment: Mains input - Internally set 220/240v. 40/60hz. 110/120V. 40/60Hz
Internal fuse 110/120V hands. - TIA 220/240v. - T500mA
Max input power 65vA
HP Output, Approximately 100mW Into 4/8ohm
Appromimately DI Output 600mV RMS output level at 30Watts

UTILIZATION

My brother (guitarist) no one has tested only once: for him, he is nice but lack of energy and it is reminiscent of the old blues - rock a little to Johnny Rivers.

For the harp, with one good mic or shure (although I advise against it) of the Bluesmaster hohner, we get a cool sound, the old blues sound ... Only regret is missing the reverb.

I found the manual on the net (on the website of marshall I think) and even the diagram technique for components etc ... the manual is limited to the strict minimum, some specifications ...

SOUNDS

For the harp, I find it pretty cool, it looks pretty cool with its old potassium.

The usual setting of marshall (simple: all the potassium in depth!) Is prohibited.

In short, this is the amp that could give the lie to the reputation of Marshall (I'd like to see play on metalheads, they would be surprised!)

OVERALL OPINION

It'll be a year since I have it.

What I like most is his former side, simple (the amplification system is very simplistic) and robust (I have no pota sizzling despite age). In addition, it is rare to find other people who have it. The look suits me very well.

What I like least is its weight and size (even if it was a 100W lamp, I will understand), the transport is a hassle ... its lack of power, crunch (and not easy to get the clean sound, ideal)

I tested the 2000 valverstate my brother (for the harp, I would not recommend), the Peyvey Classic (I know if the 70w or 100w) tube (TERRIBLE!) And a Custom 30W transistor (very good sound for the guitar).

I remain convinced that this is not the amp that will make me play better ... even though my teacher did not try, I think any good harmonica player is able to make it sound.