(Originally written by LuK le Brugeois/translated from Audiofanzine FR)
The BST Echo Chamber is a tape delay... It's a fully analog device. I don't know when it was made... It provides two inputs (high/low) and two corresponding outputs...

UTILIZATION

The overall design is very simple. Four controls: Volume, effect mix, feedback and delay time...

No tap tempo nor other modern functions...

I don't have a user's manual (I found it in a garbage can!)... But it's very easy to understand how it works

SOUND QUALITY

Beautiful effect. It sounds very warm and it gives a nice vintage character to every signal... I tested it with an SH-101, a Nordstage, several guitars, Farfisa organs (Matador, VIP 205R, FK 50), etc. The sound is great with every instrument...

OVERALL OPINION

I've been using it for one and a half years. I like its articulated and very expressive sound... It allows me to generate Pink Floyd-like feedbacks (The Piper at the Gates of Dawn for example), which is very interesting...

I own another BST echo processor but this one is clearly better...

It sometimes generates a light hum noise... but its sound compensates for that and much more...

I didn't buy it and I have no idea of how much it costs.

I would like to find another one!