dtb50 & dtb100 Amplifiers

Overview

dual tone booster, dtb50 & dtb100

The ultimate no compromise, hand-wired, dual channel amps!

dual means…
dual channels, each with its own tone controls (Treble, Mid, Bass)
dual tone shift switches
dual bright switches
dual boosts

dtb50 OD channel Jim Weider live, 1×12 with Celestion G12-65, 1952 Tele neck then bridge pickup, Wet reverb pedal in loop

dtb50 OD channel Jim Weider, 1×12 with Celestion G12-65, 1952 Tele Big T pickup neck pickup

dtb50 OD channel Jim Weider, 1×12 with Celestion G12-65, 1952 Tele bridge pickup

dtb50 OD channel Jim Weider, 1×12 with Celestion G12-65, parts Tele humbucking neck pickup, vintage VOX wah, El Capistan delay

dtb50 OD channel Jim Weider live, 1×12 with Celestion G12-65, 1952 Tele Big T neck then bridge pickup, wet reverb pedal in loop, El Capistan delay

Features

  • Two channels with independent tone controls so you can dial in your sound for each channel
  • Separate tone shift switches for each channel
  • Separate bright switches for each channel
  • Two boosts on channel 2 (full range and mid emphasis)
  • Tube buffered FX loop with Send and Return level controls (forget external loops! This loop is voiced specifically for the amp so that your effects work perfectly with no compromise to your tone)
  • Three way footswitch, with detachable and easily replaceable cables, control Channel selection, Boost 1 and Boost 2 for five gig-ready tones
  • Front panel LEDs so you always know which channel is selected
  • Clean channel is full bodied and chimey and works perfectly with pedals
  • OD channel goes from a bold, full bodied clean to articulate and focused gain, to mid boosted mean
  • Two speaker outputs with 4 and 8 ohm selectable impedance (8 and 16 available by request)
  • Available with two (dtb50) or four (dtb100) 6L6GC output tubes depending on your requirements and preferences
  • Back panel bias jacks and trim control so you can easily keep the output tubes biased at the optimum setting as your tubes age
  • Custom power and output transformers
  • Optional half power switches so you can get power amp distortion and drive at lower levels
  • All components selected for TONE!

Description

With its pure tube and no compromise signal path the dtb, dual tone booster (in both the two and four output tube configurations, dtb50 and dtb100) could just be the ultimate hand wired, dual channel amps. Adjectives that people use to describe the amps like sparkle, fullness, compression, body, focused gain, smooth feel, and touch sensitivity have all been designed in with the careful selection of components including resistors, capacitors, transformers, chassis and tubes.

The two versions of the dtb (two and four output tubes) are meticulously voiced and took over two years of tonal development before they were finalized. The amps were built in collaboration with Jim Weider, Tele player extraordinaire and known obsessive tone fanatic. The main goals were to build hand-wired, tone to the bone channel switching amps with two great souding channels, each with its own dedicated EQ (Treble, Mid and Bass) that sounds and has the right feel for any playing situation whether for recording, live or at-home playing. These amps were put through their paces by Jim in both live and recording situations and the development went on until he was more than satisfied! Jim’s involvement was so deep that his signature is on the back panel.

Colby amps are built to the absolute highest quality standards and are 100% hand-built with care. “My designs tend to have a lot of controls but a few things were of paramount importance to the outcome; the control panel had to be easy to understand and operate; nothing was done if it would compromise tone in any way; and every feature had to be useful.”

For more details on the features and function, please download the owner’s manual.

Click here for the review of the Colby dtb50 in Guitar Aficionado Magazine!

Click here for the review of the Colby dtb50 in the February 2013 issue of Vintage Guitar Magazine!

Amp video clips:

dtb50 or dtb100?

Which to choose: dtb50 or dtb100?

Choose the dtb50 if you play small to medium gigs or other situation where you have the chance to crank it up to get power tube overdrive. If you are lucky enough to be able to crank a 50 watt amp, this is the amp for you. The optional half power switch offers 25 watts so you can crank it at lower levels.

Choose the dtb100 if you are playing large venues or just want the additional beef, low end punch and headroom that a four output tube amp can provide. Since both amps have been designed with good low volume preamp distortion sounds from channel 2, the dtb100 is a good choice even if you only play at home. A half power switch is also available for the dtb100 which offers more low end punch and a tighter sound and feel in the half power mode than the dtb50 at full power.

dtb 50 Specs

dtb50

  • Dimensions: (W) 21 1/2″, (D) 9 1/2″, (H) 12″ (head shell is 10″, add 1″ for feet and 1″ for handle in down position)
  • Weight: 34 lbs.
  • Power: 50 Watts (higher with EL34s or 6550s)
  • Tubes: five 12ax7, two 6L6GC
  • Front panel controls and switches:
    • Clean channel: Volume, Treble, Mid, Bass, Bright, Mid Shift
    • OD channel: Volume, Treble, Mid, Bass, Gain, Master, Bright, Mid Shift, Bass Boost, Gain Boost 1, Gain Boost 2
    • Common: Channel Switch, Presence
  • Back panel controls and switches: On/Off, Standby, Bias jacks, Bias trim pot, Impedance selector, two speaker outputs, optional half power switch, FX send and Return level controls , FX Send and Return jacks, Foot switch jacks
  • Price: $3,800

dtb 100 Specs

dtb100

  • Dimensions: (W) 21 1/2″, (D) 9 1/2″, (H) 12″ (head shell is 10″, add 1″ for feet and 1″ for handle in down position)
  • Weight: 36 lbs.
  • Power: 85 Watts (higher with EL34s or 6550s)
  • Tubes: five 12ax7, four 6L6GC
  • Front panel controls and switches:
    • Clean channel: Volume, Treble, Mid, Bass, Bright, Mid Shift
    • OD channel: Volume, Treble, Mid, Bass, Gain, Master, Bright, Mid Shift, Bass Boost, Gain Boost 1, Gain Boost 2
    • Common: Channel Switch, Presence
  • Back panel controls and switches: On/Off, Standby, Bias jacks, Bias trim pot, Impedance selector, two speaker outputs, optional half power switch, FX send and Return level controls , FX Send and Return jacks, Foot switch jacks
  • Price: $4,200