The Symetrix 606 is a great delay that can also do other effects like chorus, flanging, vibrato, phasing, room simulation, and it has a
very powerful
modulation matrix. I bought it on ebay about 20 years ago, racked it, and only used it a few times. It’s in mint condition, includes the user’s guide and a handy laminated parameter & preset chart with flowchart on the back.
This will be professionally packed and shipped within three working days of receiving payment.
Sound demo:
https://www.youtube.com/watch?v=gbjeADZiuZM
Review:
https://www.soundonsound.com/reviews/symetrix-606