Amp turns on but hums. I’ve been told it needs new tubes. You can hear the guitar playing through the humming but it’s muffled. Please Look at Photos for Condition!

Vintage Harmony 400A Guitar Amplifier. This is a fully working Harmony 400A, a super cool low-watt tube guitar amp from the 1950s-60s. It runs a single-ended tube circuit with the following tubes. Estimated at 3-5 watts, this amp is not very loud, making it perfect for practice, harmonica, or mic’d recording. It delivers classic, warm lo-fi breakup, especially with single-coil pickups. Original small speaker approx. 6 Original Jensen speaker. Volume & Tone controls. Typical vintage hum/crackle when adjusting knobs. Cosmetic wear consistent with age (see photos). ? Tone: Smooth overdrive at low volume. Perfect for slide guitar, harmonica, and retro blues tone. Think early Chess Records or garage band vibes.

Dual 6V6 power tubes.

Harmony H303A Vintage Tube Guitar Amplifier Amp. THE AMP IS WORKING Had a little Static in the first plug when adjusting volume BUT THE POWER CORD HAS BEEN CHANGED OUT ALSO MAY WANT TO / OR NEED SOME RESTORING Also missing a Knob. Please check pictures for best ideal of condition. ITEM IS IN GOOD USED CODITION ITEM MAY SHOW SOME SIGNS OF WEAR FROM BEING USED ASLO MARKS / SCRATCHES / SPOTS ALSO MINOR DUST / DIRT… UNPAID CLAIM AUTO SET FOR 2 DAYS.

This is a Vintage Harmony 525 1×15 Tube Combo Amp. In good VINTAGE CONDITION Sounds GREAT with a guitar for all you blues players. Runs without any issues, though it would likely benefit from a re-cap & maybe a tube replacement. It has a minor hum when on. Which sounds like a normal old tube amp hum. Has its Original 15in. Jensen is in great shape. This is a rare find. I acquitted this from estate of a professional musician in New Hampshire. You are welcome to pick this up here in Waldoboro, Maine. If you would be driving from south of me. I would be happy to meet you in Portland, Me.

Powers on with loud hum.

In pretty good condition.

Jensen Harmony H420 amplifier. Unknown working condition powers on speaker makes noise but needs thoroughly cleaned it’s been in storage for a long time.

You are looking at a Harmony H205 amplifier. The original 12 in Rola speaker ein code dates it as either August of 1953 or 1963. These first appeared in the 1950′s, so I’m guessing 1953. The overall condition of the amplifier is very good considering the age. There are small scuffs here and there and the grill is somewhat faded. When I bought it a few years ago, I had the cord changed to a three prong, replaced the handle and replaced some capacitors. It has been played in my studio since then. It has two 6V6 tubes and puts out 10 to 15watts. It has 2 guitar inputs and a microphone input or for third guitar. There are 2 volume controls and a tone control that also turns the amp on and off. There is some 60 cycle hum with higher volume which is common in these amps. The amp has a nice overdriven tone when cranked. There is a schematic stapled to the inside of the amp. This is your opportunity to get a cool vintage hand wired point to point amp made in Chicago, USA. I gladly answer any questions you may have and good luck.

Estate find, plays, might need new tubes or servicing as I’ve not done anything to it. See photos to view condition.