Purchased from Louisville area music shop some years ago. I was told it had the “Wampler mod” to reduce high end fizz. I’ve also heard it referred to as the “Brent Mason mod”. I honestly don’t know what was done to the circuit or how. But the LED is certainly blue and it does have a rounder sound than other BD-2s I’ve been able to use. Some signs of wear. But works good as new. The back plate is gummed with adhesive so I have installed a 3d printed riser plate for a proper hook and loop surface. Both will be included with purchase. Any original packaging or paperwork/manuals not included. Power supply not included.