Gibson Explorer GA-18 Tweed Amp 1960

Shipping calculated at checkout.

No Sales Tax For Customers Outside Of California.

This is the perfect example of a Gibson GA-18 from the best era of Gibson amps.

For too long, these Gibson amps have lagged their Fender counterparts, but the secret is out and prices are rising accordingly.  This isn't hype-caused, the amps are just really good and have been undervalued.

This amp is very near 100% original.  It appears that perhaps the filter cap can was changed at some point.  The speaker was reconed as well.  These are the only changes to the amp.  Even the tubes are original, and they all test out as fully functional.

The amp runs strong, offering sweet, organic tone.  The tremolo could use a little work.  The slowest speed is a bit too fast.  Capacitor updates in the tremolo section can change the speed range.  For now, we're leaving the amp is-is, including the original, ungrounded power cable as the amp is largely undisturbed.

Cosmetically, the Explorer is about as clean as they come.  There are a few very small spots on the grille that look like they caught some glue or something.  The tweed is in great shape, and the handle is intact.

  • Case/Cover?: No
  • Color: Tweed
  • Dimensions: W20" x H16-1/4" x D8-5/8"
  • Weight: 23lbs
  • Watts: 14-18 Watts
  • Date: 1960
  • Where date is noted: Speaker Code, Pots
  • Speaker 1 Brand/Model: Jensen P10R C6 786
  • Speaker 1 Size: 10"
  • Speaker 1 Code: 220018 18th week of 1960
  • Speaker 1 Cone: Re-coned 12/5/2002
  • Power Transformer brand and/or codes: GA-18 P, 324017
  • Output Transformer brand and/or codes: GA-18 O, 166940
  • Extension Speaker Out? No
  • Reverb or other effects?: Tremolo
  • Rectifier Tube: 5Y3 GT
  • Rectifier Tube Brand: ?
  • Power tubes: 2 x 6V6 GT tested
  • Power Tube Brand: Gibson 
  • Preamp Tubes: 2 x 12AX7 tested
  • Preamp Tube Brand: ?
  • Filter Caps: Original
  • Pedal?: Original
  • Pots, codes: 134 5749
  • Grille: Original
  • Knobs: Original
  • Handle: Original
  • Power cord: Original 2 Prong
  • Notes:

Shipping policy:

Shipments will require signature on delivery, no exceptions.  If there is damage, the buyer must retain all packing materials intact and picture them immediately and send them to  Less than 1% of our shipments are damaged in transit, and we are committed to making sure your item arrives safely, but we are taking these additional measures to make sure you are happy with your purchase. 

We Pack with Care

We pack items extremely well & utilize special vintage instrument insurance in case there is a damage claim.

Shipping Services

We prefer UPS based on their performance before & during the pandemic. USPS is usually our choice for international shipping.

Out the Door Quickly!

We turn your orders around quickly so you aren't fiending for your items for long. Most orders depart within 24 to 48 hours.