Omnisonic amp volume control - Opinions?

[Scotty477]

Has anyone used or is using one of these at the moment?

It's an Omnisonic volume control for tube amps. It appears to do the same job as an attenuator but at a fraction of the cost, which is interesting.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=130214211471&ssPageName=STRK:MEWA:IT&ih=003

[Johnny Mac]

Looks interesting. I wonder how it works!

[hunter]

It's not an attenuator, simply a volume box for the effects loop of your amp.

Depends on how the amp is wired up whether this has an impact at all.

[the_bleeding]

if your fx loop is located before the phase inverter (which it very most likely is), all it will do is act as ANOTHER master volume. It will just suck tone.

If your fx loop is by some miracle located after the phase inverter, it will act as a post-phase inverter master volume.

in summary: its a scam

[blue]

yeah, it's just a volume pot in a plastic box.  i have one like it because my old Laney combo has four channels, all with individual volumes, but no global master volume.  in such a circumstance it's a potentially useful tool, but how many valve amps with an effects loop don't also already have master volume?  it does NOT do what it says on the tin!! (which is, in fact, plastic)

[jpfamps]

If you have a parallel loop (the best type, although if is called a "loop" it should by definition be parallel), then this will be of little benefit.

If you have a series "loop" (ie not a loop but an insert) that has send and return levels then this device will also be of little use.

This might be of use in a "loop" with no send/return level adjusts (although this type of "loop" can be fairly useless if implemented badly), however so would any effects unit with a volume adjust on it.