Vintage Holmes Corporation Model K-25 Keyboard Amplifier in working condition. This keyboard amplifier appears to be in good used condition. The amp has been tested to power on and does amplify sound when a microphone was hooked up to it. It does show cosmetic wear, such as surface rust on the metal screen and on the handle. It is light and should be able to be fixed up. Shows scuffs and scratches, dust and dirt. No rips, tears, cracks or breaks. The body is solid and all the knobs turn with no issues.