HQRP12V AC Adapter / 12-Volt Adaptor Compatible with Jim Dunlop ECB005 Replacement fits Rockman Guitar Ace, Metal Ace, Bass Ace Headphone Amplifier [UL Listed] Plus HQRP Euro Plug Adapter

It works perfectly with my Rockman UDG!

The description of the item should have given it away. 12v? The rockman is a 9 volt system so this power adapter does not work. The company that sold it was great and gave me a refund quick but I feel bad for them when Amazon suggests this adapter in their bundle feature when it doesn't work for the item they're pairing it with. Once I went back and looked at the adapter individually you can select between 12v and 9V the rockman takes the 9V so don't make the same mistake I did. Once again the supplier was quick to get me a refund but I'm sorry to them they lost money because of that mistake. Not sure who that one is on??

Good

Works great for the YAMAHA DD75. I bought one here on Amazon because I thought the DD75 I purchased didn’t come with it. Imagine my surprise when I realized the DD75 I bought from Sam’s came with the power supply. Keeping it as an extra.

Its always good

Worthless.

works ok

Works like it needs to

To get the connector to make electrical contact with my Rockman Guitar Ace, I had to trim back the plastic housing around the adapter's connector so that it would fit into the jack/input of the Guitar Ace. Then.... When I got the adapter to work (by making electrical contact) the 12 volt out put of adapter altered the sound of the Rockman. It sounded "choppy." It didn't sound right. Yet... When using a 9 volt battery it sounded normal/okay. Running 12 volts into a device designed to run on 9 volts?! They got it wrong!! Plus... Running 12 volts into something designed to on 9 volts over a long period of time will likely cause damage. My solution was to buy a 9 volt AC adapter from Best Buy. The only good thing about the power supply was that I was able to determine the tip polarity as being positive because it was labelled on the power supply. It's too bad that the Rockman Guitar Ace doesn't have the tip polarity labelled on the unit itself.

This unit does not fit the guitar ace by dunlop I purchased from Amazon. It was recommended in the page as the unit to power the guitar ace.The connection is wrong size. Very disappointed.

fine