Dual Envelope Generator + LFO
http://www.rolandus.com/products/system-500_540/
If you had an Unicorn Account you could see a chart with the price development of this module and the average price asked for this module.
The overall condition of this Roland SYSTEM-500 540 is like new
bought new, barely used.
I accept Paypal ff or you pay + fees
questions welcome.
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