NEW! - TRIODE CONVERSION w/TRIODE
10 tubes Generate an Effortless 200 Watts (continuous)
into 8 Ohms
Drives virtually any speaker to Soul Satisfying Volume!
- CONVERT TO AN 8 OR 10 TUBE TRIODE AMPLIFER:
UNBELIEVABLE SOUND AT PENTODE POWER! Available
in 8 Tubes for 125 Watts/ Channel or 10 Tubes for 200 Watts/
Channel. These upgrades solve all the technical problems of the
Futterman circuit including any instabilities and load sensitivities.
NO MORE EXCUSES! Drives virtually all speakers on the
PL509 OUTPUT TUBE CONVERSION with ULTRA- MODIFICATIONS
on NEW CIRCUIT BOARD!
- TRIODE BOOST© CIRCUITRY
allows the output stage to run in Triode for that ultra seductive
Triode Sound yet allows each tube to fully conduct it's rated
current at lower plate voltages resulting in less heat, longer
tube life and MUCH HIGHER POWER
than was ever available in the Futterman OTL Circuit before.
- CATHODE FOLLOWERS to drive
the output tubes keeping the amp ultra stable and allowing extended
- BASS UPGRADE By changing the
low frequency pole points of the amplifier we are able to give
the amplifier real honest bass with real sock that rivals any
good solid state amp. This adds reliability and protects output
- BYPASS CAPS: We add polypropylene
bypass capacitors to the power supply,output caps and other strategic
places in the circuit to give even sweeter highs and unbelievable
clarity and dimension.
- ADDITIONAL REGULATION: Regulation
for the front end driver stages provides for much better imaging,
bass control and repeatable performance independent of power
- IMPROVED TRANSPARENCY: We adjust
resistor values in the front end for improved high frequency
response and a more transparent presentation and modify the grounding
scheme to provide a more focused image .
- ADJUSTABLE GAIN
(via Negative Feedback): We add a three way gain switch
(27, 30, 33 db) to adjust negative feedback which TUNES the amplifier
to your speakers & room.
- GOLD INPUT & EDISON PRICE MUSIC POSTS:
Provide the most unrestricted pathway in and out of the amplfier
for your music.
- SIMPLE SET-UP, BIAS & AUTO BALANCE: Regulated circuitry in the front end keeps
the front end properly biased over the entire output range. This
was not the case in the original Futtermans where big transients
interacted with the front end to throw it out of whack. With
the addition of the cathode follower output drivers biasing the
output stage is easy and stable. There is a current sense resistor
to measure output quiescent current easily. The AUTO BALANCE
circuitry is a servo that maintains output stage balance between
the upper and lower tubes throughout the life of tubes and eliminates
- CONVERSION to the EL509 output
tube.Since the 6LF6 12 pin output tube was discontinued the supply
of NOS (new old stock) has become pitifully small and what is
left are generally unreliable and unmatchable. What is left are
mostly returns from earlier replacement and production run purchases.
I've not had good luck finding any suitable stock. SO in order
to keep your cherished amplifier up to date and running I am
offering a conversion for most amplifiers to the EL509. The EL509
is virtually electrically identical to the 6LF6 except that it
is a 9 pin base and thus requires a different socket. The EL509
is in current production and on the market at considerably cheaper
prices than the 6LF6. This also makes it much easier to find
a matched set.
- RUNS COOLER AND IS MORE RELIABLE.
The big output tubes are now in the rear - NEXT TO THE FAN!-
where they belong. The FRONT END circuitry is sheilded from the
heat for long component life.
- CHASSIS DAMPING MATERIAL: We
add chassis damping material and shock mount the power transformer
for resonance free quiet operation. The circuit board and fan
are mounted on elastomer energy absorbing shock mounts.
OTL1 Style Regulation
- The OTL1 (pictured below on this page) is the 4 chassis flagship
of the NYAL OTL Series. It used an outboard B+ power supply that
incorporated 12 transistors, 2fans, a separate power transformer
and filter bank. It was a Gizmological wonder but they failed
way too often and wasted much power in the form of heat.
Now because of the tremendous improvement in the efficiency of
the output stage it is possible to incorporate a high reliability
regulator inside the OTL3 chassis that will give the Audible
Dimensional Stability of the OTL1 without the extra 75 lbs of
weight per channel. This additional circuitry can quite simply
be installed as part of your upgrade for an additional fee. The benefits include:
- Lower heat per output tube for longer
- Tighter Bass,
- More Stable Imaging and Soundstage.
Call me for a free consultation
regarding this conversion. 413 493 6523.
The 10 Tube converted OTL in the older OTL3
chassis (8"tall). The output tubes are in the back next
to the fan and there is a heat shield to keep the front end and
power supply caps cool.
A front view of the refinished
200 Watts/ 8 Ohms
Easily drives 4 Ohm loads!
OTL 1,2,3,4 & Original Futtermans H-series
- TUNE-UP AND RE-TUBE WITH MATCHED TUBES - MODIFICATIONS PROTECT
AMP FROM OVERLOAD AND REDUCE STRESS ON CRITICAL COMPONENTS TO
PROLONG LIFE - ADDED POWER SUPPLY ENHANCEMENTS IMPROVE SOUND.
What I can say about this is that it sends shivers up and down
my spine, which is no easy feat since I hear a lot of great amplifiers.
The presentation becomes beautifully focused, eliminating the
"wandering instrument syndrome" and fluffy bass these
amps have, without losing the romance that you own these for.
These upgrades make this the BEST amplifier in the world, bar
|TRIODE CONVERSION OTL1, 3 (pair)
TRIODE CONVERSION OTL4 - Call
OTL 3 (pair) - Call
OTL 1 (pair) - Call
OTL 4, or 2 - Call
Original H3, H3AA, etc CALL
INPUT & PHASE SPLITTER TUBES
6EJ7 ea.(input voltage amp) $30.00
6FS5 ea.(phase splitter) $25.00
6LU8 ea.(screen regulators) $30.00
NYAL OTL 1
250 pounds of Pure Musical Ecstasy
New York Audio Labs NB1, NCP 1 & 2 Preamps
& HTMPS Tube Power Supply:
- 10 - 15 DB REDUCTION IN NOISE AND MICROPHONICS
- MUCH GREATER TRANSPARENCY AND SILENCE BETWEEN NOTES.
- CLEARER AND SWEETER HIGHS, TIGHTER BASS, BETTER LOW LEVEL
- REDUCED SWITCHING TRANSIENTS BETWEEN LINE AND PHONO INPUTS.
- ADD GAIN SELECT SWITCH - 60 db or 74 db.
- CUSTOM GAIN ADJUSTMENT FOR YOUR CARTRIDGE.
- REBUILD REGULATORS (if necessary) AND MODIFY TO ENHANCE RELIABILITY.
- ADJUST LINE GAIN AND TAPE FOLLOWER OUTPUT LEVELS.
- ELIMINATE LINE INPUT BLEEDTHROUGH.
- REBUILD TUBE POWER SUPPLY TO LOWER HEAT & NOISE AND TO
- ADD ADDITIONAL HEATSINKING TO FILAMENT REGULATORS TO ENHANCE
NB1, NCP1, 2 $1599.00
NCP2/ HTMPS $1899.00
W/ MIT caps add $400.00 - If you want another type call.
CUSTOM OTL AMPS
We can create for you a custom
OTL amplifier from scratch. There are many options to choose from:
- ANY WATTAGE from 10W to 1000+Watts, 4 tubes to 24+ output
- Direct Coupled (DC) servoed output stage or Capacitor Coupled
- Classic Futterman H3AA Circuit (OTL w/o regulation)
- ANY COMBINATION OF UPGRADE CIRCUITS
- NYAL Style 4 chassis OTL1 (OTL w/ Full Regulation)
- Kaye style 2 chassis OTL1 (OTL w/ Full Regulation)
- Power Factor Corrected Regulated power supply for solid bass
- OTL W/Modern switching power supply-very light weight (no
iron!), much lower shipping costs and regulated like an OTL 1
All amplifiers use the EL 509
PLEASE CALL OR EMAIL ME at
802 257 5085 or 413 493 6523 Or Moscode@att.net
Don't wait for a more
expensive major breakdown to occur before coming to us for service.
These modifications come out of many hours of servicing &
LISTENING experience. Many satisfied customers are enjoying the
benefits of our research now - WHY NOT YOU?