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Demeter Bass 400
Our Price: $999.00

The DI of Choice

Winner of the Acoustic Guitar Players Choice Award (1998)

The Demeter Tube Direct Box is the DI of choice for hundreds of studios, engineers, producers and artists the world over. The clear, warm quality of the Tube Direct enables it to maximize the sound of all types of musical instruments. Whether your application is an acoustic guitar pickup into a porta-studio or thousands of dollars of synths and samplers recorded direct-to-disk, the Demeter Tube Direct Box provides the highest fidelity available.

The original single-channel Tube Direct Box (VTDB-2B) is our most popular tube direct box. Used in the studio and on the road over twenty years, this is the choice for flexibility, portability and economy. It has the extremely high input impedance and tremendous headroom necessary to prevent loading and to preserve the wide dynamic range of the instrument.

What are some applications of the Tube Direct Box? The Tube Direct Box is being used by top artists, producers and engineers because it enables the true, uncolored sound of electric and amplified acoustic instruments to emerge. Here are some specific applications:

Acoustic guitar: the extremely high impedance (over 20 M) of the Tube Direct insures a perfect match with every pickup to provide a warmer, more natural sound-both live and in the studio.

Electric guitar (clean DI sound): the Tube Direct provides a clear, warm sound that retains all of the guitar's natural brilliance and harmonics for creating a viable (many feel the only) direct electric guitar sound with or without additional signal processing.

Electric guitar (amplified): the buffered 1/4" output jack can be used to drive an amplifier through up to 50 feet of guitar cable. It also prevents cable loading to produce a fuller sound from both single coil and humbucking pickups.

Pedalboards and effects devices: the buffered 1/4" output jack is ideal for running through all types of pedals and effects with virtually no signal loss.

Synthesizers, drum machines and samplers: the Tube Direct warms up the sound of the synthesizer and provides an ideal interface for the variety of synthesizer output levels and impedances.

Digital and hard disk recording: the clarity and sheen of digital and hard disk recording can sometimes seem a little harsh or more brittle than desired. Judicious use of the Tube Direct can often mitigate this problem at several points in the recording chain, including mixdown.

Demeter Sound in an Affordable Package

The famous Demeter sound and quality is now much more affordable, building on the concept of our VTBP-M-800D. We wanted to come up with even a smaller more competitively priced Amplifier that could deliver the Demeter sound, while keeping the compromises to a bare minimum. We are more than happy with the results. Real tube sound with lots of class D power in a small great looking Package. The Bass 400 & BSC-310 recently won the Premiere Gear award from Premiere Guitar! Check out the article here http://www.premierguitar.com/articles/23353-demeter-amplification-bass-400-amp-and-bsc-310-cab-review

Features

Classic VTBP-201 tube pre-amp circuitry . Hand wired in the USA using High quality components, DC filament, full 220V high voltage supply. Passive tube tone controls Treble, Middle, Bass and Presence. Our new Mode switch that lets you control the overall tone: Dark, Normal and Bright. It also includes active and Passive inputs. The unit has a pre-amp output if you need to run more power amplifiers (like our Minnie 800D) and a power Amp input. The power Amplifier delivers 250 Watts RMS into 8 ohms and 400 watts RMS into 4 ohms There are two Speakon combo jacks on the back to hook up your speakers. The unit comes stock with a line level Balanced studio out that is selectable Pre or Post EQ. We also offer an upgrade for the studio out using a Jensen transformer microphone level Direct output. The Amplifier comes in a Black Tolex covered birch plywood cabinet with handle. The amp weighs only 8 lbs and measures 11”wide x 5.5”high x 8.5”deep. Built right here in the USA in our Barn in Templeton CA.

Specifications

  • Inputs: two instrument level 1/4” jack. One for Active Basses and one for Passive Basses
  • Tone section: Treble Control: The treble control gives 6 dB of boost or cut at 4 kHz (6dB per octave, shelving type).
  • Middle Control: The middle give 6dB of boost or cut at 500Hz (wide Q, peaking type).Bass Control: The bass control gives 9dB of boost or cut at a frequency of 80Hz (6dB per octave, shelving type).Presence Control: The presence control gives up to 12dB of boost at a frequency of 4kHz (active type, 6dB per octave).
  • Mode switch: Dark, is a high frequency cut fattening up your fundamental. Normal, flat operation showing off more overtones. Bright, brings out the overtones on the dullest basses or speakers.
  • Internal Volume Trimmer: This control is designed to match the output volume of the VTBP-M-800D with the sensitivity of any Bass.
  • Standard, Studio output: Line level solid state driven 3 pin balanced output selectable Pre or post EQ with gound lift.
  • Power Amplifier input: line level input for the 400 watt power amplifer +9 dB for full output
  • Pre-amplifier output: Lets your pre-amp control more power amplifers (Minnie 800D) for any size venue
  • Power Amp Outputs: Operating at 4 (400w), 8 (250w) or 16 ohm (150w). 1/4” & Speakon

Preamp Specifications

  • Input impedance: > 1meg ohm
  • Output impedance (line): > 1 kohm, (unbalanced)
  • Minimum load impedance: 10K
  • Maximum output: + 24dBV
  • Signal to noise ratio: - 80dB
  • Frequency response : 10Hz to 40kHz
  • Tubes: Hand Selected 1-12AX7a
  • Outputs (preamp): 1/4” unbalanced ,
  • Operating voltage: 115V or 230V AC
  • EQ gain : + or - 12 dB
  • THD : .5%
  • 3 pin XLR Direct out
  • Power supply: 220V DC
  • Filament: 6.3 V DC

Power Amp Specifications

  • Outputs (power amp): Speakon/1/4” Combo Speaker jacks
  • Output impedance (power amp): 4 ohm, 8 ohm, 16 ohm
  • Output Power (power amp): 400 watt RMS @ 4 ohms, 250 watt RMS @ 8 ohms

Demeter Bass 400 w/ Jensen Transformer

Demeter Sound in an Affordable Package

The famous Demeter sound and quality is now much more affordable, building on the concept of our VTBP-M-800D. We wanted to come up with even a smaller more competitively priced Amplifier that could deliver the Demeter sound, while keeping the compromises to a bare minimum. We are more than happy with the results. Real tube sound with lots of class D power in a small great looking Package. The Bass 400 & BSC-310 recently won the Premiere Gear award from Premiere Guitar! Check out the article here http://www.premierguitar.com/articles/23353-demeter-amplification-bass-400-amp-and-bsc-310-cab-review

Features

Classic VTBP-201 tube pre-amp circuitry . Hand wired in the USA using High quality components, DC filament, full 220V high voltage supply. Passive tube tone controls Treble, Middle, Bass and Presence. Our new Mode switch that lets you control the overall tone: Dark, Normal and Bright. It also includes active and Passive inputs. The unit has a pre-amp output if you need to run more power amplifiers (like our Minnie 800D) and a power Amp input. The power Amplifier delivers 250 Watts RMS into 8 ohms and 400 watts RMS into 4 ohms There are two Speakon combo jacks on the back to hook up your speakers. The unit comes stock with a line level Balanced studio out that is selectable Pre or Post EQ. We also offer an upgrade for the studio out using a Jensen transformer microphone level Direct output. The Amplifier comes in a Black Tolex covered birch plywood cabinet with handle. The amp weighs only 8 lbs and measures 11”wide x 5.5”high x 8.5”deep. Built right here in the USA in our Barn in Templeton CA.

Specifications

  • Inputs: two instrument level 1/4” jack. One for Active Basses and one for Passive Basses
  • Tone section: Treble Control: The treble control gives 6 dB of boost or cut at 4 kHz (6dB per octave, shelving type).
  • Middle Control: The middle give 6dB of boost or cut at 500Hz (wide Q, peaking type).Bass Control: The bass control gives 9dB of boost or cut at a frequency of 80Hz (6dB per octave, shelving type).Presence Control: The presence control gives up to 12dB of boost at a frequency of 4kHz (active type, 6dB per octave).
  • Mode switch: Dark, is a high frequency cut fattening up your fundamental. Normal, flat operation showing off more overtones. Bright, brings out the overtones on the dullest basses or speakers.
  • Internal Volume Trimmer: This control is designed to match the output volume of the VTBP-M-800D with the sensitivity of any Bass.
  • Standard, Studio output: Line level solid state driven 3 pin balanced output selectable Pre or post EQ with gound lift.
  • Power Amplifier input: line level input for the 400 watt power amplifer +9 dB for full output
  • Pre-amplifier output: Lets your pre-amp control more power amplifers (Minnie 800D) for any size venue
  • Power Amp Outputs: Operating at 4 (400w), 8 (250w) or 16 ohm (150w). 1/4” & Speakon

Preamp Specifications

  • Input impedance: > 1meg ohm
  • Output impedance (line): > 1 kohm, (unbalanced)
  • Minimum load impedance: 10K
  • Maximum output: + 24dBV
  • Signal to noise ratio: - 80dB
  • Frequency response : 10Hz to 40kHz
  • Tubes: Hand Selected 1-12AX7a
  • Outputs (preamp): 1/4” unbalanced ,
  • Operating voltage: 115V or 230V AC
  • EQ gain : + or - 12 dB
  • THD : .5%
  • 3 pin XLR Direct out
  • Power supply: 220V DC
  • Filament: 6.3 V DC

Power Amp Specifications

  • Outputs (power amp): Speakon/1/4” Combo Speaker jacks
  • Output impedance (power amp): 4 ohm, 8 ohm, 16 ohm
  • Output Power (power amp): 400 watt RMS @ 4 ohms, 250 watt RMS @ 8 ohms

DEMETER 800 D W/JENSEN TRANSFORMER!!!!


What’s Old is New Again

In 1982 James Demeter built the first of his series of VTBP-201 pre-amps. His idea was to build a Tube Audiophile Pre-amp with Classic Bass Amp style tone section. There were other Pre-amps at the time but they were just guitar amp circuits that had major design flaws. His first customer was Leland Sklar. Lee took our proto-type to try it out and kept it. Lee used the pre-amp and it’s backup for another 25 years until he downsized his rig. In 2012 He decided to donate the #1 Pre-amp back to its creator. We were very happy to see it back and of course we had to listen to it. We were amazed how warm and clear it was. It sounded very similar to the current VTBP-201 but it was rounder and a bit slower than the newest model due it unregulated power supply and old school parts. Around the same time we found 150 of the original PCB’s that were used in that model. We decided to clone Lee’s pre-amp but, put it in the smallest box possible with our 800D power-amp. The result is the VTBP-M-800D. At 10.5 lbs. It is one 800 Watt tube tone monster.

Features

All tube pre-amp circuitry Hand wired in the USA using High quality components, DC filament, full 280V high voltage supply. Classic passive tube tone controls Treble, Middle, Bass with frequency selector and presence with frequency selection. We replaced the original bright switch with our new Mode switch that lets you control the overall tone: Dark, Normal and Bright. The unit has a pre-amp output if you need to run more amplifiers. A select Jensen transformer drives our 800 watt class D Amplifier. There are two Speakon combo jacks on the back to hook up your speakers. We offer upgrades for Jensen transformer Direct outputs and a line level effects loop. The amp weighs 10.5 lbs and messures 13”wide x 5.5”high x 9”deep. Built right here in the USA in our Barn in Templeton CA.

Tone section:

  • Treble Control: The treble control gives 6 dB of boost or cut at 4 kHz (6dB per octave, shelving type).
  • Middle Control: The middle give 6dB of boost or cut at 500Hz (wide Q, peaking type).Bass Control: The bass control gives 9dB of boost or cut at a selectable frequency of 60Hz or 120Hz (6dB per octave, shelving type).
  • Presence Control: The presence control gives up to 12dB of boost at a selectable frequency of 2kHz or 4kHz (active type, 6dB per octave).
  • Mode switch: Dark, is a high frequency cut fatting up your fundmental. Normal, flat opertion showing off more overtones. Bright, brings out the overtones on the dullest basses or speakers.
  • Internal Volume Trimmer: This control is designed to match the output volume of the VTBP-M-800D with the sensitivity of any Bass.
  • Optional, Studio Output: The VTBP-M-800Dm- features a mic level Jensen DB-E output transformer for a balanced studio output.
  • Effects Loop: in/out line level
  • Power Amp Outputs: Operating at 4 (800w),8 (500w) or 16 ohm (250w). 1/4” & Speakon

Preamp Specifications

  • Inputs: one instrument level 1/4” jack.
  • Output impedance (line): > 1 kohm, (unbalanced)
  • Minimum load impedance: 10K
  • Input impedance: > 1megohm
  • Maximum output: + 24dBV
  • EQ gain : + or - 12 dB
  • Signal to noise ratio: - 80dB
  • THD : .5%
  • Outputs (preamp): 1/4” unbalanced , Optional 3 pin XLR Direct out
  • Frequency response : 10Hz to 40kHz
  • Tube: 1-12AX7a selected 1-12AT7
  • Operating voltage: 115V or 230V AC
  • Power supply: 280V DC
  • Filament: 6.3 V DC

Power Amp Specifications

  • Outputs (power amp): 1/4” Speaker & Speakon
  • Output impedance (power amp): 4 ohm, 8 ohm, 16 ohm
  • Output Power (power amp): 800 watt RMS @ 4 ohms, 400 watt RMS @ 8 ohms