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WE'VE UPDATED OUR MINI TORII


This is version II of our favorite small exotic tube amp - the Mini TORII.  Exotic because it employes fully tube regulated input and output stages in a fully dual mono configuration using two independent power supplies.  The most exotic grain free amplifier you'll ever find in such a small package.  This amp has enjoyed it's own cult following for many years now, and we've figured out a way to take it to an even higher level by ...



  1. Upgrading the powder coat paint to a black wrinkle finish reminiscent of the 1930's typewriters.
  2. Changing from Aluminum to Steel for far greater mass and lower micro-phonics.
  3. Using special cryo-treated Jupiter beeswax capacitors with Silver leads for all coupling.
  4. Installing infinitely adjustable feedback (meaning zero to 6dB) to let the raw and extraordinarily fast attack of this tone machine out of the box for the first time and you can adjust it to what you think sounds good!




The Mini Torii is a 6V6 BASED SINGLE-ENDED CLASS A dual mono amplifier.  It
features tube rectified power supplies using EZ90 tubes, an OA3 tube voltage regulated output tube stage, OC2 tube voltage regulated input stages and dual stepped volume controls.

NO ADJUSTMENT OR MAINTENANCE

It's a self biasing design where you never have to adjust it - ever. 

COMPATIBLE WITH DIFFERENT TUBES

There are 6V6 compatible output tube equivalents that are plug in compatible, the ideal platform for tube rolling  See further down this page for more info on the tube choices.


SIZE/HEAT

In addition to it's small size (8-1/2 x 11 inches) it also runs cool for a tube amp making it friendly on your desk top even on hot summer days. No stress involved in leaving this amp on for days at a time... it doesn't care.


PREAMPS

Preamps are optional and generally not needed. The amp has stepped volume controls for each side and enough gain to work with even the lower output sources such as an IPOD or even a good phono stage coupled with a lower than average output cartridge.

 
BI-AMPING

A special preamp output is provided on each channel should you like to drive a slave amplifier such as is common when bi-amping speakers. This output is tied to the Mini Torii's volume controls and retains full signature of the amp, including tube choices.  This makes the slave amplifier sound like your Mini Torii for a more seamless blend and far better imaging!


TREBLE SHUNT

Finally there is a treble control that has been carefully crafted to take edge off the top end, from barely detectible to substantial so that you can enjoy listening to sub-par recordings or internet streams without going nuts as well as trim the shout right out of your single driver crossoverless speakers in bright rooms.


UNMISTAKABLE FIDELITY

The real deal - not mass produced. It is a hand-built, point-to-point wired amp for purists and music lovers alike. We affectionately named this amp after it's big brother, the TORII MK III which is a 25 watt push-pull. If you've experienced both good single-ended and good push-pull you know the push-pull typically has more hit and authority in the low end. On the flip side, single ended amps have a transparency and midrange to die for so we're always left wanting both. The Mini Torii SE, thanks in part to the tube regulated input stage has a signature and a hit that makes you think your listening to a much larger amplifier, making classic and hard rock sound good despite being heard on a small single ended amp - rare.








ALL OPTIONS CAN BE SELECTED DURING CHECKOUT

KNOBS



There are three controls on a Mini Torii... Left Volume, Right Volume and Treble shunt.  Below are your knob choices for these controls.  You can select the knobs from a list when you add to cart.



VOLUME CONTROLS

The standard volume controls have 10 detents which make it easy to set the same volume for each channel.  You can still make small adjustments to one channel or the other because the control can be adjusted between detents and it will stay there.

The stepped attenuators have 20 detents which again makes it easy to set the same volume for each channel.  The advantage of the stepped attenuator is slightly higher transparency.  The disadvantage is despite having 20 positions, it is impossible to adjust the control between the positions so no small adjustments are possible.


OPTIONAL DIFFERENT WOODEN BASES


You can customize your amplifier with different wood bases at any time during your ownership.
That's because there are eight simple screws holding your amp to it's wooden base making it easy for the owner to change out at any time.

The standard base is dark walnut as shown in the pictures on this page.  This is what your amp will ship with unless you specify otherwise from within the shopping cart.  Other woods include oak, maple, cherry, black.  If you select to have an exotic wood, you can write what you want in the comments section during checkout.  We'll communicate with you via e-mail or phone to make sure we get what you want.





  • Small size - built on an 8-1/2" x 11-1/2 " thick aluminum plate.  Same size as a piece of paper, great for desktops.
     
  • Light weight - easy to grab and move around with one hand - making trips to the listening room painless.

  • Low heat - no internal parts get hot, only the output tubes create significant heat.  The EZ90 rectifier tubes generate less heat compared to the bigger 5U4, 5Y3GT rectifiers.  With 6V6 tubes the power transformers run cool even with 24/7 operation.
     
  • Long life - all internals are way overbuilt, there's just nothing inside to fail. Expect 50 years of use out of it without problems.
     
  • Hand built - point to point wired and silver soldered the old school way right here at DECWARE in the USA.
     
  • High Mass Steel chassis with a single point ground buss eliminating any signal from passing through the chassis.
     
  • Lasting good looks - The amp features a black powder coat 1930's typewriter finish that always looks great and clean.  Finger prints can not be seen and it's scratch proof.
     
  • Solid hardwood - bases available in Walnut and Black.  Custom woods including most exotics are available for an extra charge.  Bases are user interchangeable.
     
  • Low cost of ownership - tubes last almost forever in this thing, and they are easily found and typically inexpensive.
     
  • Ease of ownership - the amp is self-biasing and completely dual mono so you never have to worry about constantly SETTING the bias or matching the tubes. There is nothing to adjust or maintain, just plug the tubes in and enjoy.
     
  • Ergonomic - the controls, including on/off switch for each channel are located at the front for easy access when it's on your desk or in your rack.
     
  • Low power - the amplifier can't blow itself up if the speakers are unhooked, nor can it blow up a speaker if a tube shorts or fails.  There is really nothing you can do to hurt it or your speakers.
     
  • Big sound - don't let the low power fool you.  It's called the mini-Torii for a reason since it sounds and carries itself the same way. (The Torii is our 25 watt amp)
     
  • Adjustable sound - designed with high efficiency single drivers as a likely paring by many customers, a defeat-able treble control was incorporated that works perfectly to take any hotness out of the top end, be it the speaker or recording.
     
  • Hi-end jacks - with removable IEC power cord ensure it's right at home in the main listening room with other high dollar boutique amplifiers.
     
  • Built-in preamp - this amp has twice the gain of all of our other amps coming to full power at about the half-way point on the volume control, so no preamp is needed even with lower output sources like those from your computer or ipod.
     
  • Preamp outputs and bi-amping - for open baffle (and other) speakers.  A special pair of output jacks was implemented to feed a second amplifier of your choice with a strong line level signal that matches your volume control and treble control settings.  This output is transformer driven so that the even order harmonic signature of the amp is embedded into the output signal to insure the second amp has a matching sound.  WORKS GREAT TO DRIVE a subwoofer too.
     
  • Woofer control - higher dampening than our Triode amps for better driver control and tighter bass.  
     
  • Adjustable regulation - tube regulation of output tubes uses your choice of VR75~VR150 tubes allowing you to lower the power of the output tubes to effect different sonic signatures.
     
  • Adjustable feedback - Feedback can be varied from the factory setting of 6dB infinitely down to zero with an adjustable control independently for each channel.
     
  • Dual Mono - This is actually a pair of single ended monoblocks that were built side by side on the same chassis.
     
  • Proprietary Iron - Decware output transformers are a big factor in the fidelity of our amplifiers.  They are USA made from the best grain oriented silicon steel cores and best sounding copper magnet wire with careful interleaving for wide bandwidth.


IDEAL SPEAKERS

The Mini Torii will work with 4, 8, 16 ohm speakers, but will put out the most power into an 8 ohm speaker.  To be sure that fractional amounts of power differences between these three loads are not an issue we recommend speakers that are 93dB 1watt/1meter or higher and ideally 8 ohm.



TUBES

Everything needs a center, so the stock tube compliment that ships with the amplifier is carefully tested and voiced for this amplifier.  They are of the highest quality and ideal for those who wish to not worry about tubes and just enjoy music.


TUBE ROLLING (SKIP THIS PART IF YOU'RE NOT INTO CHANGING THE SOUND OF YOUR AMP)

If you decide to change the way this amp sounds despite the fact that we ship it with hand picked top quality tubes that we like, that's ok. The truth is that a great single ended amp is the amp you can't hear leaving you the rather empowering opportunity to experience the unique and delicate signatures of a large variety of tubes. In other words, it becomes an experience of listening to the tubes and about the tubes... not the amplifier.
 
To that effect...


All of these tubes will work in a Mini Torii II - each pair sound different.

1944 RCA gray glass 6y6g.jpg

1949raytheon 6V6GT.jpg

1951 national union 6V6GT.jpg

1950sylvaniagrayglass 6y6G.jpg

1950nationalUnion6V6GT.jpg

1944 RCA Gray Glass 6Y6G

1949 Raytheon 6V6GT

1951 National Union 6V6GT

1950 Sylvania Gray Glass 6Y6G

1950 National Union 6V6GT


1955sylvania JAN-CHS-6V6GTY.jpg

1959tung-sol6L6WGB.jpg

1960canadaGE 6L6-GB.jpg

1961raytheon6V6GT.jpg

1962ken-rad 6V6GT.jpg

1955 Sylvania JAN-CHS-6V6GTY

1959 Tung-Sol  6L6WGB

1960 Canada G.E. 6L6-GB

1961 Raytheon 6V6GT

1962 Ken-Rad 6V6GT

1964 Sylvania6V6GT.jpg

1970sylvania6L6.jpg

1972RCAAmperex5881.jpg

1979philipsJAN-6L6-WGB.jpg

cbs-hytron 6L6WGB1961.jpg

1964 Sylvania 6V6GT

1970 Sylvania  6L6G

1972 RCA / Amperex 5881

1979 Philips JAN-6L6-WGB

1961 CBS-Hytron 6L6WGB

CEI 6L6GB 5881.jpg

International 6V6GTA.jpg

ken-rad 6Y6G.jpg

sylvania black 6y6G.JPG

westinghouse6v6GTA.jpg

CEI 6L6GB
5881

International
 6V6GTA

Ken-Rad Black Top 6Y6G

Sylvania Gray Glass 6Y6G

Westinghouse
 6V6GTA

tungsol type41 6K6.jpg

rca6k6gt.jpg

ge 6k6gt.jpg

1940rca type41 6k6.jpg

6f6gt sylvania.jpg

Tung-Sol Type41 6K6

RCA
6K6GT

G.E.
6K6GT

1940 RCA
Type 41 6K6

Sylvania
6F6GT

1961 ge 6f6.jpg

USSR 6f6m-1.jpg

ken-rad 6f6.jpg

6L6 black plates.jpg

shuguang 6L6.jpg

1961 G. E.
6F6 Metal

USSR
 6F6M-1

Ken-Rad
6F6 Metal

6L6 Black Plates

Shuguang
6L6

rca 6L6 metal.jpg

RCA tung-sol 6L6.jpg

amperex el37 6L6.jpg

kenrad 6L6 metal.jpg

svetlana 6L6.jpg

RCA
Metal 6L6

RCA-Tung-Sol
6L6

Amperex EL37-6L6

Ken-Rad
6L6 Metal

USSR
6L6

 ge 6L6 GB 1957 black plate HP.jpg

 ge 6L6GC double o getr.jpg

tungsol 6L6.jpg 

GE5881.jpg 

sylvania jan chs 5932 chrome top black plate 6L6.jpg 

1957 G.E. Black Plate 6L6-HP

G.E. Double "00" Getter 6L6GC

Tung-Sol
6L6

G.E.
5881

Sylvania JAN-CHS 5932  Black Plate


GET THE POINT?

There are huge sonic differences between the 6V6, 6Y6, 6K6, 6F6 and 6L6 output tubes in the Mini Torii II amplifier. The differences are not unlike owning a completely different amplifier with every change.

All are compatible with the Mini Torii II. These are just the output tubes, of which the amplifier uses only two, one for each channel. The above list is only a sample of some of the really good sounding N.O.S. tubes you can enjoy in this amplifier. Of course there are also lots of the standard 6V6 tubes that the amp was specifically voiced for that also sound great.


VOLTAGE REGULATION TUBES

Your amp will ship with an OA3 Voltage Regulator tube for each channel.  This is the best performance of the four.  The remaining three (OB3,OC3,OD3) can be used to take the tube rolling experience to a deeper level. The four voltage regulator tubes above all modify the operating points of the output tubes they supply high voltage to. This in turn changes the way the output tube sounds.




CABLES

This amplifier is so transparent that differences between cables will now become big differences. If you don't have good interconnects or speaker cables or just not sure how good yours are... we offer reference quality cables that will let you hear its full potential. It is important to us that you hear what your new amp is capable of and most customers, even those with expensive cables, find that ours sound better.

SUPPORT

This amplifier is hand built in the USA by DECWARE / High Fidelity Engineering C0. It comes with a lifetime warranty to the original owner. If you purchase one second hand and ever have questions or technical problems we WILL be happy to check it out for you and service it if needed for a very reasonable rate.

We also have a support forum with many people who own this amplifier who's experiences you may benefit from. 


REVIEWS

You may read reviews on our amps going back 15 years.  Since this amp is new, the best place to find reviews on it will be in our support forums.


HISTORY of REVISIONS / OWNER'S MANUALS

Mini Torii amplifier

MINITORII - 2009 to Oct 2012


Easily distinguished by the gloss white chassis plate.  Original models used a 7 pin 6X4 rectifier tube that was later changed to a 9 pin current production EZ90 rectifier tube.  Owner's manual below:

Minitoriimanual.pdf
Mini Torii II

MINITORII-II - New in Oct 2012


Also easy to recognize because the finish has been upgraded to black wrinkle.  Features user adjustable variable feedback.  Cryo treated beeswax signal caps are now used throughout.  New high mass Steel Chassis for improved micro-phonics... ads 150% more mass!




UPGRADES

The main two things that changed between the original Mini Torii and the new one is the user adjustable variable feedback mod and the beeswax signal cap mod.  Both of these mods can be performed on any original Mini Torii built with the white plates at a cost of around $500 for both.

 

This amplifier requires no adjustments or maintenance other than changing tubes every couple years. It is a self biasing design and dual mono - meaning tube matching is not required.

Weight   17 lbs. ea.
Dimensions   6.50" H x 12.125" W x 9.125" D
Circuit type   Single ended Class A Pentode
Power output   3.3 watts RMS into 4 ohms
Input voltage   1.0 volts for full output w/ 12AU7
Noise / Hum   Too low to hear
Response   20 Hz ~ 20 kHz
Regulation   OA3 and OC2 / tube voltage regulation
Rectification   EZ90 tube rectification
Output tubes   6V6
Signal tube   12AU7 
Transformers   Decware
Biasing   Self-Biasing
Resistors   precision WW/MF by DALE, VISHAY
Signal Caps   Cryo Treated Beeswax & Foil Jupitor caps with Silver Leads
AC cord   Removable power cord
Consumption   75 watts at full power
Input jacks   RCA type 24K Gold / Teflon
Output jacks   5-way binding posts accept 12 gauge
Speaker dB/1w   89 dB minimum / 96 dB is ideal
Warranty   Lifetime to original owner


TUBE COMPLIMENT



NOTE: Left channel is a mirror-image of the Right channel


REAR CONNECTIONS



NOTE: Left channel is a mirror-image of the Right channel






RELATED INFO


Mini Torii with IPOD
STEVE'S DESIGN NOTES on this amplifier. 

Shown with an IPod to give you a sense of scale. 

The Mini Torii is small enough to fit on your desk. 














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