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Half the size and weight of the Wotan MB-1250,
the MB-750 Reference uses the same design and components as
its hefty brother. Featuring twelve 6550 tubes,
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The most powerful production tube amplifier ever made for
the music lover. This VTL flagship product - Wotan
MB-1250 - represents the pinnacle home audio system for audiophiles
who truly seek for sound perfection. With 1250 Watts per channel
in tetrode, or 600 Watts per channel in triode, the Wotan
MB-1250 has the authority and reserve to deliver musicality,
clarity and depth to satisfy the most demanding listener.
Featuring twenty-four 6550 tubes per side, with three power
supplies on a double-decked chassis, the 250-lb MB-1250 is
safety tested for home use. Considered the Rolls-Royce of
the VTL line, each pair of MB-1250 undergoes extensive testing
hours in the VTL laboratory. To assure proper installation,
each new pair of Wotan MB-1250 sold will come with the personal
attention of VTL's President Luke Manley. Luke will custom
install the MB-1250's for all new owners.
- 1250 watts (tetrode) per chassis.
- 250 lbs/115 kg, 20 x 20 x 21"/51 x 51 x 51cm.
- Data Specification
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The
Story of VTL’s Wotan Reference Amplifier 
Wotan is the powerful mythical character from Wagner’s ‘Ring Cycle’ opera. In the opera, Wotan, as the ruler of the gods, commands authority and obedience from those he ruled. Feared and loved, contriving and wise, just and self-serving, Wotan embodies the full antithesis of many human attributes. Wotan’s signature music throughout the opera is stirring and majestic, with predominantly deep bass strings, depicting the many facets of a mighty, complex being.
We at VTL created the Wotan MB-1250 to capture the quintessence of power and authority in an audio amplifier. Our Wotan is also the hero who fears nothing, who strives to reproduce the purest tonal color, and the most refined nuance that recorded music has to offer. The mighty Wotan amplifiers can take control of the most demanding loudspeaker load and thunder out deep bass with the authority of a mighty ruler, while at the same time handling the delicate passages with speed and nimbleness of a youthful hero.
VTL has put the current version of the Wotan MB-1250 Reference amplifiers into production since 1998 – the Wotan is probably the most powerful tube amplifier in continuous production in the world high-end audio industry. An awesome demonstration of the Wotan's unsurpassed power was setup for Hi Fi '98 in Los Angeles where we used 3 pairs of Wotans in a triamped system with the Martin-Logan Statement speaker systems.
As in all of our Reference models, the Wotan MB-1250 is constructed as a double-chassis design, with a power supply on the lower chassis and the amplifier on the upper chassis, and the two layers connected to each other with an umbilical cord. The power supply of the Wotan consists of five power transformers, all positioned inside a custom made transformer box with the 5 transformers floating inside thick elastomer material, aimed to isolate vibrations from the power transformers from the sensitive input stages.
The On/Off power switch of the Wotan is a two stage turn-on switch, required for the huge current draw that the amplifiers demand from the wall outlet, and to get the most from the amplifier, a separate 30 Amp line for each amplifier is highly recommended.
The Wotan amplifier chassis holds the circuitry
to the heart of the amplifier, with a total of 24 tubes per
monoblock, and the famed VTL wide-bandwidth Signature Output
transformer. All capacitors in the signal path are MIT multicaps,
and the amplifier is stable down to 2 ohm loads. Each output
tube can be individually biased from the top deck of the amplifier.
The amp can be used with either balanced or single-ended inputs.
A switch in the back easily controls switching between tetrode
and triode mode.
Weighing a hefty 245 lbs. per monoblock, our Wotan MB-1250 is not for the faint of heart. For those who make the journey to experience what these unique amplifiers have to offer will be well-rewarded with a listening experience that will stir their souls.
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- High energy storage power supply >780 Joules.
- Separate B+ power transformers for input and output stages.
- MIT caps standard in all signal paths.
- Two stage power on.
- 3000 hours rated tube life.
- Signature Output transformers.
- Balanced Inputs and Single-ended Inputs.
- Tetrode-triode switching.
- Individual bias settings for each tube.
- 600V B+ fuse for added protection.
- VTL custom gold-plated RCA Jacks and binding posts.
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Components of the Year 1999-2000 Power Amplifier VTL MB1250 Reference Stereo Sound (Japan), Issue 133, January 2000. |
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Wotan MB-1250 Product of the Year 1998 Stereophile Magazine |
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VTL MB-750 Reference Amps: Brunnhilde Rides Again! The Absolute Sound, Issue 125, August/September 2000. |
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Wotan's Little Brother: VTL MB-750 Reference Tube Amplifier Ultimate Audio, Vol.4 No.2, Summer 2000. |
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VTL Wotan MB-1250 Monoblock -- Follow Up Review Jonathan Scull, June 1998, Stereophile Magazine |
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VTL MB-750 Signature Monoblocks Brian Damkroger, December 1997, Stereophile Magazine |
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VTL Wotan MB-1250 Monoblock Jonathan Scull, October, 1996 Stereophile Magazine |
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VTL MB-750 Signature Monoblocks: Tracking the Evolution of a Titan, Wayne Donnelly, September 1996 Volume 1 Issue 7, Fi Magazine |
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