BST Echo Chamber is a box of tape delay magntique ... The operation is 100% analog. I have no ide of the date of manufacture of this machine ... It possde one between "high" from a "low" and two corresponding outputs ...

UTILIZATION

Gnrale configuration is very simple. One volume knob, a mix of "its not modifison modifiquot;, a button for the number of rptition, another for the hard of rptitions ...
It goes without saying that there is no tap-tempo, or things like that ...
I got no manual (I found it in the trash!), So I can not judge the clarity of the instructions ... Nanmoins with this type of product four buttons, it not hard to understand how it works.

SOUND QUALITY

The effect is particulirement beautiful. Trs is hot, and adds a layer of dusts dlicieuse the sound of the instruments on which it is connected ... I test on a Sh-101, a Nordstage, various guitars, Farfisa organs (Matador, VIP 205R, FK 50), etc ... and each time the sound is sublime ...

OVERALL OPINION

I use it for a year and a half. I love the sound that comes from living this box and its expressive qualities relatively large ... The possibility of a feedback floydiens enough (see the type of sound that is on The Piper at the Gates of Dawn, for example) is really interesting ...
I have another box echo BST, and that is definitely the best ...
A lightweight buzz is sometimes heard ... but I forgive those little imperfections that machine because it's more than compensates for the services it provides ...
I did not buy and I have a vague ide prices that rating.
If I had the choice again (find it in the trash)? Absolutely