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 Model
MLB / Zen Triode Audiophile Headphone Amplifier
INTRODUCTION
This wonderful
single ended triode amplifier was designed to drive headphones between
30 ~ 600 ohms without compromise! Ideal with headphones like
Grados, BeyerDynamics, Sennhiesers and even the difficult to drive
AKG K1000s will sound spot on the mark. The amazing detail
and openess are no accident and I'm reasonably certain that once
you have one, it will become you're little buddy too! If you're listening
to a headphone jack on some piece of equipement you'll no doubt
either wonder what all the fuss is about headphones... or why a
person would need this? After you hear it's presentation you'll
wonder why they put headphone jacks on CD players and preamps. There
is a reason for dedicated headphone amps and if you already have
one you might want to read on and see how it stacks up against this.
DESCRIPTION
Dedicated
all tube stereo headphone amplifier. Class A single-ended
operation with constant curent source cathode followers driving
a pair of Combination core transformers using High grade Grain Oriented Silicon Iron (M6) and Mumetal
(76% Nickel). This provides ultra low distortion, exceptional bandwidth and
transient response which is maintained over the full dynamic range. Selectable
output impedance switches ensure the correct match with your headphones.
Noise and hum are undetectable even at full volume which with
most headphones would be a level 4 times louder than you could
stand to listen to it at.
FEATURES
ALPS
volume control, headphone jack, and impedance switches are located
at the front for ease of use.
Removable
power cord and on/off switch are located at the rear as are the
high quality Gold/Teflon RCA input jacks.
Super
low output impedance will drive even the most stubborn headphones
while maintaining the correct frequency balance.
Powder
coated steel chassis is sealed with no vents to let in dust, smoke,
or other contaminents including stray RF. Stays new looking
inside even after 20 years!
Massively
oversize power supply using tube rectification and Ruby GOLD caps
offer bottomless power without getting hot - in fact you can leave
it on 24hrs a day with no worries.
In
the Zen tradition, top grade internal parts are all hand point-to-point
wired with parts leads and no hookup wire in the signal path.
Tube
compliment is made up of your choice of 6N1P, 6DJ8 or 6922's. Circuit
is self-biasing. Rectification is your choice of 5Y3GT, 5AR4,
or 5U4. The MLB ships with 6N1Ps and 5Y3GT for reference.
Ceramic
tube sockets with gold pins are used for all three audio tubes.
The
MLB can be used connected directly to any line level source. No
preamp is needed nor recommended.
HAND
MADE IN THE
USA
SPECIFICATIONS
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Size
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6"W
x 11"D x 6.5" H
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Weight
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13
lbs/120Volt 14lbs/240Volt
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Chassis
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Steel
with grey powder coat finish
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Consumption
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70
watts
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Input
jacks
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Gold/Teflon
RCA
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Output
jack
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Stereo
1/4 inch phono
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Input
impedance
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100,000
ohms
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Output
Zo
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<
10 ohms
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Transformer
Type
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AC
coupled, 1 per channel
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Max
Ratio
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12:1+1+1
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Trans
Pri Z
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10,000
ohms
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Trans
Sec Z
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600/150/70
+ 75 ohms
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Headphone
Impedance Range
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30
~ 600 ohms
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Trans
Max Power at 20 Hz
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500mw
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Frequency
Response +/- 1/5dB
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10Hz
~ 30kHz
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Frequency
Response +/- 3 dB
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6Hz
~ 70kHz
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Operating
Modes
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Duel
Lo/Hi Z
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Max
output into 32 ohms
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4
V RMS (150mw)
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Max
output into 250 ohms
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6
V RMS (120mw)
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THD
@ 1 V RMS / 1kHz
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0.6
% ~ 1.0 % 250ohm HiZ/32 ohm LoZ
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Noise
@ 1 V RMS / 1kHz
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- 65dB
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Operating
Voltage USA model
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100~125
VAC 50/60 cycles
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Operating
Voltage World model
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220
~ 250 VAC 50/60 cycles
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Warranty
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Lifetime to original owner
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SCHEMATIC
ONLY
My Little
Buddy Headphone amp schematic
OWNERS
MANUAL with SCHEMATIC
My
Little Buddy OWNERS MANUAL
 You
will need acrobat reader to view the schematic and or owners manual.
It is in a .pdf
format.
NOTE:
This product currently uses the high quality SOWTER output
transformers from ENGLAND.
Turn around time is 4
to 8 weeks.
MODEL
MLB Zen Triode Headphone Amplifier
$862.00
complete
with premium tubes
also
available in 220/240VOLT 50/60 HZ
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