Unison Research Mystery One Preamplifiers

5/5 (2 Reviews)


Product Description

- Pure Class A valve preamplifier.
- Max input voltage: 8 V (peak to peak).
- Max output voltage: 80 V (peak to peak).
- Valves 3 x double triodes (amplification), 1 x double diode (rectification).
- Max power consumption: 80 VA.


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Reviews 1 - 2 (2 Reviews Total)

User Reviews

Overall Rating:5
Value Rating:5
Submitted by carl11529 a AudioPhile

Date Reviewed: August 9, 2002

Bottom Line:   
Just acquire a JPL of early production (circa 1992). Very high quality parts (Rifa, Philips etc). Immediately change the tubes into Amperex Bugleboy 12AX7 (x3). Silky smooth sound. Extended well from top to bottom end. Surprisingly, very dynamic sound for a tube design.

The seller lend me a Unison Research Mystery One for comparison. Unison is more nostalgia kind of sound (perhaps because of tube rectification?), warm and romantic. However, Unison's treble is obviously rolled-off compared with JPL. Bass extension is about the same. JPL is thus more "modern" sound. In terms of look, both are good, though Unison seems to be more unique in terms of design.

I wish I can keep both of them and use Unison with Apogee Diva and JPL with Sonus Faber Extrema...

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Used product for:   Less than 1 month

Duration Product Used:   AudioPhile

Product model year:   1996



Overall Rating:5
Value Rating:5
Submitted by meliscat a AudioPhile

Date Reviewed: March 21, 2002

Bottom Line:   
The Mystery One, is one of the quietest preamplifiers I have heard in over 25 years thanks to the grid DC being provided by a couple of batteries. The sound is open and trasparent with a superb soundstage. It's one of thoes products that makes you listen to the music and not the electronics. All this with looks to die for - it's the Italian styling! Its a super match for the Graaf GM20 power amp(s)and of course Unisons own Smart 845's (I don't like them, the bass is too soft for an 845 design)

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Used product for:   More than 1 year

Duration Product Used:   AudioPhile

Product model year:   1996

Price Paid:    $1795.00

Purchased At:   Dooleys of Macclesfi




Reviews 1 - 2 (2 Reviews Total)

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Any one into The Mystery?

I picked up The World Is A Game, I haven't listened to the whole things yet but sounds pretty good. I noticed they were from Canada and wondered if any one here was into them, I also noticed this is their 7th album, my first though. My first impression they are melodic with a retro Prog flavor. A ... Read More »

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