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Used
Genuine Roland part HD6301Y0A99P microcontroller, specific version used in the Roland TR-505.
This is the brain of the unit, holding the internal firmware and controlling all operations.
Used part in excellent condition, carefully desoldered and tested.
Warning: Last items in stock!
HD6301Y0A99P (internal firmware, not rewritable)
Only compatible with TR-505
Note: requires proper desoldering/resoldering.