deHavilland UltraVerve 3 Preamplifier

 

 

 

Note: all UltraVerve models with the 32-step attenuator are in fact 

"UltraVerve 3" models. Some were labeled" UltraVerve 2" ,but if they

are fitted with the 32 step relay attenuator, they are Model 3 . 

 

 

"But having lived with some of the elite high-end pre-amplification from the likes of Jadis, Sonic Frontiers, and Air Tight, the deHavilland UltraVerve is currently my first choice in line amplification." ...more

 ---Dick Olsher, EnjoyTheMusic.com

Product Information 

 

We are proud to bring the UltraVerve 3 vacuum tube line stage preamplifier to production.. It features the famous 6SN7 octal vacuum tube, and all vacuum tube rectification using  the 5AW4 / 5U4 octal tube rectifier.

  

We developed this line stage to complement our single ended triode amplifiers. One of the things we  achieved was to design a preamp that did not damage the dynamic quality of the music. The UltraVerve 3 line stage is a true zero negative feedback Class A design. The octal tube complement coupled with tube rectification produces a huge, full-bodied soundstage and an angelically sweet and dynamic midrange.  This preamp is just a joy to listen through.

 

The UltraVerve 3 preamplifier features 100% hand wired point-to-point circuitry in the audio as well as the power supply circuit. The front panel is heavy duty anodized with Solar Black powder coat chassis. It features a soft start turn on circuit for gentle startup. The design places very little stress on the tube compliment. This assures extremely long  service and sonic life of the tubes. Quality, Value, and Performance, by deHavilland, "Hand made in California with a passion for sound since 1997"

 

according to Kara:

 

The octal tubes we employ give you what in "Tube Lore" is described as "BIG TONE", something you just can't get with nine pin miniature tubes found in most preamps. 12AX7ís or 6922ís just can't get there. While many companies say that the simplest circuit is the best, they donít practice what they preach -- they have miles of circuitry and solid state regulation everywhere. Our R&D shows that regulated power supplies can ruin the dynamics and imaging, just like too much feedback does. We spend more time and money on our filtering and use big, strong 5U4 and 5AW4 tube rectifiers, because they provide super dynamics. Furthermore, all of our power supply and audio circuit wiring is point to point, using the best wire available and the best dielectric known to man -- air. And while others may dress their equipment up with fancy gold or chrome plating and exotic woods that offer little or no sonic improvement, we prefer to use premium components and provide you, the listener with affordable, high quality equipment.  Our gear is literally overbuilt to last a lifetime!  At deHavilland, we are serious when we say that we want more listeners to be able to experience the beauty of single-ended vacuum tube sound, making this type of pre amplifier available to a much wider range of listeners -- that's our story.

 

Why SET amplification? go to Conversation with Chief Engineer deHavilland 

 

UltraVerve Photo Gallery Link

 

Awards

"Bluenote Best of 2004 Award', Enjoy the Music

"Best Sound", CES 2004, From the ears of Srajan Ebaen 

VSAC 2003  "Best Sound of Show" by Srajan Ebaen, 6 Moons

"Silk Class" Catecory Award, HE2003 Report, by Srajan Ebaen

"Best of Show" Finalists CES 2003, by Dick Olsher

"Best 845-Based Amplifier", CES 2003,  by Dave Glackin

"Best Sound of Show", CES 2003, by Roger S. Gordon 

"Best Sounding Room At The Show", CES 2003, by Greg Weaver

"The Top Five" CES 2003, by ED Morawski 

 

Reviews 

 

NEW! DeHavilland UltraVerve Preamplifier by Francisco Duran

UltraVerve Preamplifier by Dick Olsher

The Dehavilland  UltraVerve preamplifier by Roger Gordon

UltraVerve Preamplifier - Juice  Wuth Jump by David W. Robinson

Audio Asylum Review, UltraVerve Junior

The deHavilland 845-G and UltraVerve Preamp, by Dave Thomas

The deHavilland UltraVerve Preamp, by Mike Levy

Audio Asylum Review, bu Gary Peeke

Audio Asylum Review, by Kevin Bevan

deHavilland UltaVerve Octal Tube Preamp by Martin DeWulf

 

Show Reports 

CES and T.H.E. Show 2004, by Martin DeWulf, Bound for Sound

"Good Times at CES 2003", by David W. Robinson

New! Rocky Mountain Audio Fest October 2004

 

 

Product Features 

 

* All octal tube compliment

* Vacuum tube rectification

* Direct coupled audio circuit

* Heater warm up delay timer

* Cardas Cable

* Silver teflon coated high purity copper wire

* Wonder Solder

* Output level balance controls - optional

* 100% hand wired point to point circuitry

* NEW! Silver or black anodized brushed aluminum front panel

* Paint filled engraved logo

* Steel Gray Metallic powder coated chassis

* Side Wood Panel Ready- Chassis includes 2 per side 8-32 

  threaded  anchor points to mount custom side panels.

 

Design Specifications 

 

bandwidth                        20Hz to 80 kHz

output class                     Class A 

feedback                          zero negative feedback                           

maximum output               30 volts p-p,  gain approximately 12dB

signal triodes                    1 X 6SN7  (GT, GTA, GTB, WGT)

cathode follower                2 X 6AH4 Single Triode

rectifier tube                      5AW4 or 5U4

signal/noise ratio               85dB     

inputs                               four stereo 

outputs                             two stereo

input impedance                50k ohms.

output circuit                     Cathode follower, minimum 10k Ohm load             

dimensions                       18"w, 11"d, 6"h

weight                              15 lbs. including shipping carton.

 

The "UltraVerve 3" Preamplifier is exactly the same as the "Verve" Preamplifier with the following added features:

 

* Higher voltage power supply transformer 

* High voltage 5AW4 rectifier tube

* Cardas Litz wiring

* Vampire high purity solid copper wire

* Military Spec Paper in Oil Capacitors

* Auricaps

* Roederstein Resistors

* NEW!!! Stepped Attenuator

Custom made relay actuated analog computer controlled 32 step stepped attenuator with or without remote control... NOW AVAILABLE.!!! 

 

Pricing:

 

UltraVerve 3 Preamplifier--------------------------------$ 2,495

Options:

Select Sylvania GTA/GTB preamp tubes------ $50.00 each

 

6SN7 Tube Rolling by Dennis Boyle

 

 Award Winning Single Ended Triode Amplifiers and Preamplifiers

 

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