ODR #072 on Reverb

[ijedouglas]

https://reverb.com/item/46365843-dumble ... ange-suede

[Aaron]

Beautiful amp. Hopefully we get to hear it one day.

Aaron

[Guy77]

Interesting how it has no extra knobs in the back to adjust the Overdrive and the separate clean mix knob like the #60 has.
This looks like it would have a different preamp circuit than the #60

Cheers
Guy

[fred.violleau]

Owner says "I have owned the amp for about 20 years now - only played in the house." and lists another Dumble for sale on reverb... Really curious as to whom collects amps like these only to play them at home. Need a big property to handle the volume of two beast like these

Fred.

[mojotom]

Interesting how it has no extra knobs in the back to adjust the Overdrive and the separate clean mix knob like the #60 has.
This looks like it would have a different preamp circuit than the #60

Cheers
Guy

I think most of them are unique regarding circuit topology (from the start and with tweaking from him).
#60 was heavily tweaked and some ODSR have a separate Rev Level for each channels.
Most of the Silver chassis may have started life as Pre OD. This one could be still a Pre OD Reverb.

[Guy77]

Interesting how it has no extra knobs in the back to adjust the Overdrive and the separate clean mix knob like the #60 has.
This looks like it would have a different preamp circuit than the #60

Cheers
Guy

I think most of them are unique regarding circuit topology (from the start and with tweaking from him).
#60 was heavily tweaked and some ODSR have a separate Rev Level for each channels.
Most of the Silver chassis may have started life as Pre OD. This one could be still a Pre OD Reverb.

Hi Tom. Yes I agree. I attached a close up pic of the back of the amp with arrows showing the empty preamp tube positions. There appears to be only 2 preamp tubes in line across the back were as the #60 had all 6 tubes straight across the back.
If one looks more closely at the back shots you can make out another tube further back in the chassis. So this one has them spread out across the chassis much like the Steel String Singer #5 and #2.

I wonder how many preamp tubes this one has? Interesting!

Guy

Empty preamp tube positions.

ODSR72.JPG

Shows tube further back in chassis.

ODSR72a.JPG

[professormudd]

This forum has the best Dumble detectives.

[Max]

For comparison:

https://ampgarage.com/forum/viewtopic.php?f=4&t=27806

https://www.jimsguitars.com/s/3887/Ampl ... pecial.htm