GUITARS, BASSES, AMPS & EFFECTS SINCE 1999

Cream City Music is a world class guitar shop with over 1000 new, used, and vintage instruments, amps, & effects in stock daily. For over 20 years, we’ve been serving guitar lovers worldwide as a premier authority on everything related to fretted instruments.

Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp

  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
  • Vintage 1930s National Dobro Model B 20W 1x12 Tube Combo Amp
Sold

This instrument has been sold. Check below for our current selection of vintage & used gear.

Do you want to sell your used or vintage guitar, bass, or amplifier? …

Cream City Music will buy a single piece or an entire collection with up to $500,000 paid same-day for your gear.

Sell Your Gear
See All Financing Options

Description

A vintage pre-war National Dobro Model B tube combo amplifier in player-grade condition. Manufactured in the mid to late 1930s, this amp was one of the most powerful instrument amps of its era. This particular example has seen better days cosmetically, but it is a great player. A tone control has been added to the front panel, and an extension speaker jack was added to the rear grill. Using this jack mutes the internal speaker, allowing you to use the amp with a cabinet of your choice. This amp has a similar tone to other offerings from the era--a full clean tone that turns into a thick, tweed-ish overdrive as you turn up the volume. The Mic channel offers a bit more gain than the Instrument side. Despite being one of the first instrument amplifiers ever produced, this little combo has plenty of power and produces guitar tones that are on par with those of amps manufactured many decades later. This amp has been cleaned and tested. It is fully functional and sounds great.

Overview
-Serial #: C7415
-Manufacture Date: mid to late 1930s
-Power Output: 20 Watts
-Tubes: 5V4, 6L6 (2), 6N7 (4)
-Controls: Instrument Volume, Mic Volume, Tone
-Dimensions: 18'' x 16'' x 9''
-Weight: 30 lbs

Cosmetics (see phtotos)
-covering painted over
-replacement grill cloth
-missing flip top lid

Electronics
-original speaker: 12" National Dobro 12P25A Field Coil
-original transformers
-tone control added to front panel (see photos)
-extension speaker jack added to back grille (mutes internal speaker)
-many replaced capacitors
-replacement power cord plug end