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Old 8th September 2007, 05:45 AM   #1
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Default ROWLAND Research D40 Amp

Hey folks, just bought the aforementioned amp. Looks like it's an early design. Does anybody know anything about this? Mark.
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Old 15th September 2007, 06:12 PM   #2
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Nobody knows anything about this??

I may need to post a picture...... PS I still haven't plugged it in and see how it sounds like.

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Old 15th September 2007, 06:23 PM   #3
TNT is offline TNT  Sweden
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This is a DIY forum - is it a kit?

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Old 15th September 2007, 06:27 PM   #4
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Location: Colorado
It's a really old design, probably from the early '80s. I think Jeff built them in his garage when he was still working for Ampex, before he quit to start building amps full time. I seem to remember that it was a very slim and maybe rack mount design.

I don't know anything about the circuitry. If it works, you are in good shape. To get any more information, you should just call Jeff Rowland Design Group in Colorado. I don't think he made more than a few dozen of them, and there isn't much information out there on them.
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Old 15th September 2007, 06:41 PM   #5
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Charles, good point about contacting Jeff. Didn't know he worked for Ampex before. Indeed it's a rack mount amp. I'll let you know how it sounds like. Thanks. Mark.
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Old 15th September 2007, 06:43 PM   #6
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Hey TNT, it's not a kit. I know very little about it. Charles mentioned that it was an old Jeff's 'starter' amp. Mark.
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