deHavilland GM70-A

45 Watt Single Ended Triode Monoblock Amplifier



" This amp sounded extremely sweet, and yet VERY powerful." Dick Olsher ...more

deHavilland GM70-A

         product Information: 

The deHavilland GM70-A is a 45 Watt 100% pure Class A single-ended triode zero negative feedback amplifier. The GM70-A  directly heated triode vacuum tube is the largest  output  triode available in audio today. The sound is sweet, detailed, and stunningly dynamic. The 300B combined with the GM70-A with innovative circuitry maintains the right combination of space, sweetness, and speed. The dynamic presentation is convincingly that of an amplifier many times greater than it's rated power output.

Historically, SE amplifiers have been limited in power, largely under 15 watts. Most listeners have had to employ horn loaded speakers. The deHavilland GM70 amplifier, with 45 Watts, will perform beautifully with your favorite loudspeakers whether they be medium efficiency dynamic or high efficiency horn type loudspeakers. 


And think about reliability, with only three tubes per chassis,  diagnosing any tube problems that might occur after time relatively simple Quality, Value, and Performance, by deHavilland , hand built in California  with a passion for sound.



CES 2002  CES  "Showstoppers!" Award 


Show Reports  

CES 2002 Select Impressions, By Dick Olsher

The 2002 CES and T.H.E. Show, by Dave Glackin

CES 2002  SHOW REPORT at The Tuscany Hotel  


     design specifications:


power output                45 watts rms into 8 ohms

output class                 Class A                            

bandwidth                    20-35kHz

power triode                 Ulyanov GM-70 

driver tube                    Type 300B

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

* Cardas Gold/Rhodium binding posts standard

* Silver/Paper&Oil coupling capacitors

* Hovland Musicaps

* Wonder Wire/ Wonder Solder

* Kimber Cable

* Elma stepped attenuators (optional).


"Hand made in California with a passion for sound since 1997"


Home  Products  Quotes   Shows  Mission  Q and A's  Purchasing  Contacts