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Listed on Reverb.com by Mahar's Vintage Guitars · Sep 16, 2026

Reverb Listing

Fender Twin Reverb Master Volume, Excellent 1977 - Black

Fender · 1977 · Excellent
$1,079.95
+ $250.00 Shipping
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Condition: Excellent
Fully functional with minimal signs of use. May have minor cosmetic marks.

About This Listing

This 1977 Fender Twin Reverb is in excellent condition. The late-70s Twin Reverb is a high-headroom, loud-clean platform capable of up to 135 watts through two 12" speakers.  The amp produces the wide, glassy clean tone this circuit is known for. The Master Volume circuit, introduced in this era, adds a gain stage that allows the preamp to be pushed, giving players more flexibility than the earlier non-master-volume Twin design.

The amp runs four 6L6 power tubes in a fixed-bias push-pull configuration, which is core to its characteristic tight low end and extended clean headroom. The filter and bypass capacitors have been replaced  — a standard maintenance procedure for amps of this age.  Everything else but the tubes is original. The transformers are original and all date to 1977. The speakers are original Utah 12" drivers, both in excellent condition. Current power tubes are Svetlana 6L6s; preamp tubes are Sovtek and EHX - all were tested in our shop.  We also cleaned the tube sockets and pots. The original footswitch pedal is included and is in very good condition. The amp weighs 63 lbs 8 oz. 

The amp will be shipped in three boxes and will require assembly on arrival.  Speakers will be removed to protect the baffle from damage.  The chassis will be removed to protect the cabinet and chassis.  Big amps like this can and will take damage if dropped in shipping - this is the only way to prevent it.  We can help you assemble it - standard tools are all that is needed.

Mahar's Vintage Guitars is a brick-and-mortar and web-based retailer. We are happy to talk with you before you make a purchase.   Please reach out if you feel so inclined! We cross market our items here and on our own site, so items are subject to sale elsewhere at any time (however we will never cancel a sale if it happens here first). See our profile here, our Google reviews as well as our 100% positive Reverb feedback. Also, Reverb limits us to only 25 pictures of our items. There is a good chance we have more. Contact us if you’d like to see them.

No sales tax for direct sale customers outside California. Reverb sales are always taxed.

SPECIFICATIONS

  • Date: 1977
  • Where Is Date Noted?: serial#, codes
  • Weight: 63lbs 8oz
  • Dimensions: w 26" x h 19-7/8" x d 10-3/8"
  • Watts: 135 watts
  • Case/Cover?: none
  • Covering Material: tolex
  • Covering Color: black
  • Covering Original?: yes
  • Cabinet Material: pine
  • Cabinet Condition: excellent
  • Cabinet Repairs/Changes: none
  • Cabinet Original?: yes
  • Grille Style: silver sparkle
  • Grille Condition: excellent
  • Grille Original?: yes
  • Baffle Material: pressboard
  • Baffle Condition: excellent
  • Baffle Original?: yes
  • Baffle Repairs/Changes: none
  • Chassis Material: metal
  • Chassis Condition: excellent
  • Chassis Original?: yes
  • Chassis Repairs/Changes: none
  • Knobs Original?: yes
  • Handle Material: rubber
  • Handle Original?: yes
  • Power Transformer Manufacturer: Schumacher
  • Power Transformer Manufacturer Code: 606
  • Power Transformer Date Code: 731
  • Power Transformer Original?: yes
  • Output Transformer Manufacturer: Schumacher
  • Output Transformer Manufacturer Code: 606
  • Output Transformer Date Code: 733
  • Output Transformer Original?: yes
  • Reverb Transformer Manufacturer: Schumacher
  • Reverb Transformer Manufacturer Code: 606
  • Reverb Transformer Date Code: 720
  • Reverb Transformer Original?: yes
  • Reverb Onboard: yes
  • Reverb Tank Original?: yes
  • Tremolo Or Vibrato Onboard: vibrato
  • Pedal Included?: yes
  • Pedal Condition: very good
  • Pedal Original?: yes
  • Power Tubes: 4 x 6L6
  • Power Tube Brand: Svetlana
  • Preamp Tubes: 5 x 12AX7, 12AT7
  • Preamp Tube Brand: Sovtek, EHX
  • Potentiometers Original?: yes
  • Filter Caps: replaced
  • Internal Repairs: cap job
  • Power Cable: hard wired, grounded
  • Accessories Included: none
  • Documentation: none
  • Speaker 1 - 2 Brand: Utah
  • Speaker 1 - 2 Size: 12"
  • Speaker 1 - 2 Manufacturer Code: 328
  • Speaker 1 - 2 Date Code: 715
  • Speaker 1 - 2 Cone Code: 3012 348
  • Speaker 1 - 2 Cone Original?: yes
  • Speaker 1 - 2 Condition: excellent
  • Speaker 1 - 2 Original?: yes

We buy, sell, and take trades.

Be sure to check out the other cool guitar related stuff on our site!
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Shipping Policy
By completing your purchase you are agreeing to this shipping policy. Shipments require signature on delivery, no exceptions. Less than 1% of our shipments are damaged in transit, and we are committed to making sure your item arrives safely. If there is damage, retain all packing materials intact, photograph them immediately, and send the photos to .

Amplifiers: We take additional precautions to prevent common shipping damage. Depending on the amp, this may include removing tubes, pulling the chassis from the cabinet if heavy transformers present a drop risk, or removing heavy speakers that could crack baffles in transit. Reassembly of select amps will be required on delivery — we are available to help if you have questions.  Email us if you want to know if a particular amp will be disassembled prior to shipping. These measures add to shipping costs but reflect hard-won experience and are proven to prevent damage to big, heavy, vintage amps. All amps are tested in our shop upon intake and again before shipping. We cover shipping damage but cannot be responsible for the failure of vintage components in amplifiers that are 5 to 50-plus years old.

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