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What Year Is My Music Man HD-130 Head & Cabinet

Hi all, I'm so happy to have found this forum and I'm hoping that you can help me identify what year my Music Man HD-130 head & cabinet were made. I'm including pictures and any help you all can give would be greatly appreciated. I bought this amp lightly used more than 30 years ago and I've had it in storage almost ever since. (That's why it's in such beautiful condition.) I'm now ready to sell it to someone who can use it the way it should be used, so I'm also trying to figure out what it's worth.

Full Name
Jerry Smith
Music Man Equipment
Music Man HD-130 head, (w/ Reverb & Tremolo pedal), and matching Music Man 412-GS cabinet

Member for

1 year 2 months

Jerosoles Wed, 08/30/2023 - 12:31

I have more pictures, but it seems it will only allow me one pic?

Images
Music Man Equipment
MM 2-10-65

Member for

10 years 7 months

mm210 Thu, 08/31/2023 - 08:16

If it's got a 12ax7 PI tube, it's pre 77-78. If it doesn't, after that up until maybe 80. Can't remember! It has obviously been re-tubed with Groove Tubes in it. Value- you might check fleabay and see what they are going for. Condition will get you the top of the scale. Cabinet is later than the head, obviously. Mike.

Full Name
Jerry Smith
Music Man Equipment
Music Man HD-130 head, (w/ Reverb & Tremolo pedal), and matching Music Man 412-GS cabinet

Member for

1 year 2 months

Jerosoles Thu, 08/31/2023 - 08:39

Hi mm210!! Thanks so much for your reply!! Forgive me for not knowing this, but where do I find the 12ax7 PI tube? (I'm enclosing another pic which hopefully will shed light.) Also, you said that the cabinet is later than the head. How can you tell that? Is there a way for me to determine the year of the cabinet too? Thanks again for your help and response!!

Images
Music Man Equipment
MM 2-10-65

Member for

10 years 7 months

mm210 Thu, 08/31/2023 - 18:00

OK- no 12ax7 so it's after the cut off of when they switched over to the SS driver so after 77-78. If you were to pull the chassis out, you would probably find the date scribbled on the driver board or the chassis to get a little closer. The cabinet is a little later because of the reverse field badges of black on silver instead of silver on black. Can't see the badge real clear but looks like 80's to me.

Full Name
Rob Flindall
Music Man Equipment
112RD-100 with EVM speaker, built 1981

Member for

10 years 1 month

RD112 Sun, 09/03/2023 - 06:57

If you pull out the chassis…you may find the date written on the circuit board in sharpie pen.
Also, the transformer has a date code for when it was manufactured.
Good luck.

Full Name
Jerry Smith
Music Man Equipment
Music Man HD-130 head, (w/ Reverb & Tremolo pedal), and matching Music Man 412-GS cabinet

Member for

1 year 2 months

Jerosoles Tue, 09/05/2023 - 05:25

Thanks guys!! I appreciate your replies!!