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We are very proud to introduce the new deHavilland GM70. We have surpassed our
our design goals and now offer 50 watts of purist design Class A SET sound from
one single output tube. The deHavilland GM70 maintains all the virtues and more of
our highly acclaimed deHavilland Aries 845G. With nearly double the power output
we achieve lower distortion at normal listening levels and greater headroom that can
be imagined for a SET design. To quote Dick Olsher, Senior Editor, for
EnjoyTheMusic.com, "There's a new heavyweight contender in the high-power
triode class. Neither a 211 nor an 845 can hold a candle to the Russian tank tube-
the Ulyanov GM-70." Never before has a single ended triode amplifier been offered
to the music lover with such performance.
The deHavilland GM-70 is a 100% pure class A single-ended triode zero negative
feedback amplifier. The GM-70 directly heated triode vacuum tube is the largest
output triode available in audio today. The sound is sweet, detailed, and stunningly
dynamic. The 6AU5 combined with the Ulyanov GM-70 and innovative circuitry
throws a huge soundstage, and maintains the right combination of pace, rhythm, and
timing.
The deHavilland GM-70 amplifier produces 50 watts, and is designed to drive
medium, as well as high efficiency speakers. The dynamic presentation is
characteristic of an amplifier many times greater than its rated output.
In designing our Gm-70 SE amplifier we found that the Russian socket was poorly
made and led to endless plate current instability problems. Also the sockets were
not user friendly in terms of installing or removing the tube. We have found a great
improvement sonically with our own manufacture pure electrical grade Copper/
Teflon socket. The bass and dynamics is markedly better, the mids and highs are
better focused, and overall the amplifier sounds like it has more headroom. ...more.
There is no question of reliability with only three tubes per chassis, diagnosing any
tube problems that might occur after time is relatively simple. With the on board bias
meter, checking and resetting bias for optimum performance is a real snap. Quality,
Value, and Performance, by deHavilland, "Hand made in California with a passion for
sound since 1997"
Design Specifications
* power output: 50 watts rms into 8 ohms
* output class: Class A
* bandwidth: 20-35kHz
* power triode: Ulyanov GM-70
* driver tube: Type 6AU5
* input tube: Type 12SN7 GTA/GTB
* feedback: zero negative feedback.
* input impedance: 50k ohms. (Values from 10k to 500k available on request).
* residual hum: <2mv.
* warm-up: automatic time delay for long tube life, and gentle startup
* dimensions: 12"w, 18"l, 10"h
* weight: 60 lbs
Special Features
* Point-to-point hardwired audio circuit
* Electra-Print Co. transformers
* Cardas RCA input jack
* TubeWizard (WBT like) gold binding posts
* Cardas Gold Rhodium binding posts (optional)
* Paper & Oil coupling capacitors
* Hovland Musicaps
* Wonder Wire/ Wonder Solder
* Kimber Cable
* NEW! Silver or black anodized brushed aluminum front and rear panels
* Paint filled engraved logo
* Steel Gray High Gloss Metallic powder coated chassis
* Anodized aluminum tube cages (optional)
Not available in all areas.
Depending on your location, your order may be directed to the deHavilland dealer nearest you.
our design goals and now offer 50 watts of purist design Class A SET sound from
one single output tube. The deHavilland GM70 maintains all the virtues and more of
our highly acclaimed deHavilland Aries 845G. With nearly double the power output
we achieve lower distortion at normal listening levels and greater headroom that can
be imagined for a SET design. To quote Dick Olsher, Senior Editor, for
EnjoyTheMusic.com, "There's a new heavyweight contender in the high-power
triode class. Neither a 211 nor an 845 can hold a candle to the Russian tank tube-
the Ulyanov GM-70." Never before has a single ended triode amplifier been offered
to the music lover with such performance.
The deHavilland GM-70 is a 100% pure class A single-ended triode zero negative
feedback amplifier. The GM-70 directly heated triode vacuum tube is the largest
output triode available in audio today. The sound is sweet, detailed, and stunningly
dynamic. The 6AU5 combined with the Ulyanov GM-70 and innovative circuitry
throws a huge soundstage, and maintains the right combination of pace, rhythm, and
timing.
The deHavilland GM-70 amplifier produces 50 watts, and is designed to drive
medium, as well as high efficiency speakers. The dynamic presentation is
characteristic of an amplifier many times greater than its rated output.
In designing our Gm-70 SE amplifier we found that the Russian socket was poorly
made and led to endless plate current instability problems. Also the sockets were
not user friendly in terms of installing or removing the tube. We have found a great
improvement sonically with our own manufacture pure electrical grade Copper/
Teflon socket. The bass and dynamics is markedly better, the mids and highs are
better focused, and overall the amplifier sounds like it has more headroom. ...more.
There is no question of reliability with only three tubes per chassis, diagnosing any
tube problems that might occur after time is relatively simple. With the on board bias
meter, checking and resetting bias for optimum performance is a real snap. Quality,
Value, and Performance, by deHavilland, "Hand made in California with a passion for
sound since 1997"
Design Specifications
* power output: 50 watts rms into 8 ohms
* output class: Class A
* bandwidth: 20-35kHz
* power triode: Ulyanov GM-70
* driver tube: Type 6AU5
* input tube: Type 12SN7 GTA/GTB
* feedback: zero negative feedback.
* input impedance: 50k ohms. (Values from 10k to 500k available on request).
* residual hum: <2mv.
* warm-up: automatic time delay for long tube life, and gentle startup
* dimensions: 12"w, 18"l, 10"h
* weight: 60 lbs
Special Features
* Point-to-point hardwired audio circuit
* Electra-Print Co. transformers
* Cardas RCA input jack
* TubeWizard (WBT like) gold binding posts
* Cardas Gold Rhodium binding posts (optional)
* Paper & Oil coupling capacitors
* Hovland Musicaps
* Wonder Wire/ Wonder Solder
* Kimber Cable
* NEW! Silver or black anodized brushed aluminum front and rear panels
* Paint filled engraved logo
* Steel Gray High Gloss Metallic powder coated chassis
* Anodized aluminum tube cages (optional)
Not available in all areas.
Depending on your location, your order may be directed to the deHavilland dealer nearest you.
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