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BLUE Matamp on the bench made in UK by Radio Craft. These amps are pretty nice builds with their PCB turret board construction. Seems rugged, and you can tell there is time taken into making something special. Could easily just dump it on a huge PCB and eliminate much of the hand wiring and soldering but they chose not to do this, great. This layout is very similar to the Blue Matamp I had in a previous post, if you would like to peruse for more in depth info.

BLUE Matamp on the bench made in UK by Radio Craft. These amps are pretty nice builds with their PCB turret board construction. Seems rugged, and you can tell there is time taken into making something special. This layout is very similar to the Blue Matamp I had in a post a while back if you would like to peruse for more in depth info.

I was wrangling the line out which had been somehow manipulated (added?) at some point in the past. When you view it on a scope it looks pretty bad. The output of the amp is in yellow and the line out is in blue. As you can see it is very distorted from the original signal, and only about 200mV RMS.

Wrangling the line out which had been somehow manipulated (added?) at some point in the past. The output of the amp is in yellow and the line out is in blue. As you can see it is very distorted from the original signal, and only about 200mV RMS.

Original voltage divider ratio for line out was 6.8K:470K. Adjusting it I found 510R:10K to be much better. Much better reproduction of the output signal and when the amp is cranked doing 30.5V into 8 ohms (116W output) the line out is now at 1.28VRMS

Original voltage divider ratio for line out was 6.8K:470K. Adjusting to 510R:10K worked  much better.

BLUE Matamp made by Radiocraft for GTV (GCV?). Gotta love these custom Matamps. No schematic available so you just have to sort it out yourself.

Gotta love these custom Matamps. No schematic available so you just have to sort it out yourself.