Hoffman Amplifiers Tube Amplifier Forum

Other Stuff => Solid State => Topic started by: galaxiex on April 28, 2019, 11:51:09 am

Title: Late 60's early 70's Unicord Power Plus guitar amp
Post by: galaxiex on April 28, 2019, 11:51:09 am

Anyone remember these or have info on them?

Intergoogle search yields almost nothing about them.

Some small mention if search Univox and I have already found a couple places that mention Unicord history,
but this line of amps seems to be mostly unknown/forgotten.

Links...

https://en.wikipedia.org/wiki/Univox (https://en.wikipedia.org/wiki/Univox)

https://www.vintageguitar.com/1740/univox-et-al-mersonunicord/ (https://www.vintageguitar.com/1740/univox-et-al-mersonunicord/)

Some mention of the Unicord Stage line of amps, but nothing about the Power Plus series...

I have this one...

The Jensen hi freq horn is not functional, but not really needed.

Original Utah speakers sound great!
I did have to repair the surrounds on them.

Germanium transistors in the pre amps.

True harmonic vibrato, optical.

Absolutely cavernous reverb!

Really great crunch at high volume.

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: galaxiex on April 28, 2019, 12:01:12 pm

Some inside pics...

In the first pic, the optical vibrato is on the far left, small vertical board.

These pics are before I replaced all the electro caps...

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: shooter on April 28, 2019, 12:29:06 pm

nice classic find!
I love the smell of old transistors  :icon_biggrin:

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: galaxiex on April 30, 2019, 12:37:48 pm

So no one then?

 :anyone:

I realize this is mainly a tube focused forum,
but I thought maybe some old timers might recognize this amp.

 :icon_biggrin: :icon_biggrin: :icon_biggrin:

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: shooter on April 30, 2019, 02:31:38 pm

I recognize electronics of all kinds, what folks do with it is someone else's baili-wick  :icon_biggrin:

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: sluckey on April 30, 2019, 03:25:46 pm

I'm an old timer that has never seen that one.

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: galaxiex on April 30, 2019, 09:17:14 pm

Well I guess I got me a Unicorn or perhaps a Dodo bird.

 :icon_biggrin: :icon_biggrin: :icon_biggrin:  :l2:

I'll play it for a while and maybe move it along at some point.

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: st on June 20, 2019, 08:09:30 am

When you say Univox I immediately think of a series of made in Japan analog tape delays (Google univox echo). The same units (I believe) also appeared on the market under the brand name Prévox (Google Prévox analog echo). At least in EU these units are easier to find in working conditions than the damn tapes. Build to really high quality standards. Is this the same Univox?

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: galaxiex on June 20, 2019, 10:45:54 am

Quote from: st on June 20, 2019, 08:09:30 am

When you say Univox I immediately think of a series of made in Japan analog tape delays (Google univox echo). The same units (I believe) also appeared on the market under the brand name Prévox (Google Prévox analog echo). At least in EU these units are easier to find in working conditions than the damn tapes. Build to really high quality standards. Is this the same Univox?

I don't know if it's the same...

All I know about Univox is what I find online...

Like this...

https://en.wikipedia.org/wiki/Univox (https://en.wikipedia.org/wiki/Univox)

Title: Re: Late 60's early 70's Unicord Power Plus guitar amp
Post by: st on June 20, 2019, 11:03:32 am

On closer googling, it's the same company.
The logo on the b-group amp on that page is the same as the one on some of the tape delay units. Even further googling showed that those early units are apparently made in the US.
See this one with UL logo: https://www.gbase.com/gear/univox-ec-80a-echo-chamber-tape-delay-1971-