Proudly presents the

Aries GM70

50 Watt Single Ended Triode Monoblocks
featuring the Ulyanov GM-70

from

Product Information 

We are very proud to carry the deHavilland GM70. DeHavilland surpassed their 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 the highly acclaimed deHavilland Aries 845G. With nearly double the power output it achieves 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 the Gm-70 SE amplifier deHavilland 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.

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
diemensions
12"w, 18"l, 10"h
weight
60 lbs.

Special Features 

* Class A zero negative-feedback design

* Point to point hardwired audio circuit

* Electra-Print Company transformers

* Onboard meter for easy bias setting

* Cardas Gold Rhodium RCA input jack

* TubeWizard (WBT like) gold binding posts

* Cardas Gold  Rhodium  binding posts (optional)

* Auricaps

* Hovland Musicaps

* Wonder Wire / Wonder Solder

* Cardas Cable

* Kimber Cable

* Goldpoint stepped attenuators (optional)

* NEW! Silver or Black anodized brushed aluminum front and rear panels

* NEW! Paint Filled Engraved logo 

* Steel Gray High Gloss Metallic powder coated chassis

* Anodized aluminum tube cages (optional)

 

 

Features: Shown here with Cardas Gold Rhodium RCA input and Cardas Gold Rhodium binding posts. The front 3/8 inch  and rear 1/4 inch plates are heavy anodized for maximum wear resistance and make for a super rigid chassis.


Call or email for current Black Swamp Audio pricing.


Pricing (MSRP)

deHavilland Aries 845G per pair---------------------$9,995.00

 

Optional Parts:

Cardas Gold / Rhodium binding posts-----------  $100.00