This is lush. It'll offers an optical tremolo, driven by a real tube, and a pair of Accutronics spring reverb tanks. It basically transforms your amp instantly to a 60s Fender Vibro Verb... which is what you need, right?

Model: Gurus Sinsoid
Made: Italy, recent model
Type: reverb and tremolo
Power: standard 9-12v supply
Switching: true bypass
Draw: 400mA approx at 12v
Equivalent new street price (approx): $595aud
Mods: velcro attached
Accessories: original box and manual
Condition notes: used, no major marks, excellent condition

Controls
Intensity: depth of the tremolo
Speed: speed of tremolo
Reverb: length of reverb tails
Volume: amount of reverb added