Press Responds ~ 401HR at HE2005
HE2005 Day One:
The Press of the Press
By Wes Phillips
"Gizmoid, of course, brings to mind the
late Harvey Rosenberg, and the last product introduction of the
day was Moscode's $4995 401 HR (that's in memory of Harvey), a
200Wpc tube/MOSFET hybrid amp that looked and sounded pretty special.
Designer George Kaye, who worked for New York Audio Labs back
in the 1980s, called the 401 HR an update and extension of his
original Moscode circuit. 'It's everything I've done to upgrade
the originals, along with new stuff I've thought up since then,'
he said. 'I wanted to make it look nice, and then we made it 'gizmologic'
with a glass faceplate. I have tubes for voltage stability and
the MOSFETS in the output stage eliminate the problems caused
by transformers.' "
"Remember, this is a man who revised Julius
Futterman's OTL (output transformerless) amplifiers back at NYAL,
so he's pretty serious when he says that trannies have their flaws.
'MOSFETS have limitations, but transformers have phase funnies
(truncations at the frequency extremes), as well as hysteresis
and phase anomalies between the primary and secondary windings.
In comparison, the harmonic distortions of MOSFETs are minor—and
they are easily compensated for with a little negative feedback.'
and the Wonderful at
HE 2005 in NY by Robert H.
"One more time! Moscode is back, and George
Kaye is alive and well, selling direct to the consumer. His new
amp is a beauty, with tube rolling in mind. The front end is tubed
and the output is solid state. With 200 watts into 8 ohms, this
powerhouse was gorgeous to see and hear.
Albert Von Schweikert,
GK, Robert Levi, & Kevin Hayes of VAC
Put about any tubes in the
front end and click a switch. The entire front panel is hinged
for easy access. At $4995, it's not cheap, but a sonic winner.
The Model 401HR is the one to ask for, with very luxurious sound
and strong dynamics. I liked it a lot. It will do 300 watts into
4 ohms, with single-ended operation only."
By Srajan Ebaen
"Besides his own three
rooms, Albert Von Schweikert also had speakers in the Moscode
room. The Moscode 401HR -- HR for Harvey 'Gizmo' Rosenberg of
course -- is a 200/300wpc into 8/4 ohm hybrid stereo amplifier
designed by George Kaye and sold Internet-direct with a 33.3-day
home trial period. Tubes can be swapped as long as the outer and
inner pairs remain identical. Pick from 6H30Pis, 6GU7s, 6DJ8s,
6922s, 6FQ7s, 5814s, 7730s or 12AU7s. A laser-edged display changes
color depending on status and can be adjusted for brightness.
Introductory pricing is $4,995, with an eventual price increase
Music HE2005 Show Report
Thursday - Page 2
"Moscode is back! Seen
here is their new 401HR ($4,995) with four front located tubes.
Flexibility is amazing as your choice of tubes that can be used
include 6H30Pi, 6GU7, 6DJ8, 6FQ7, 7730, or 12AU7. Main output
is via solid-state that produces 200 watt (8 ohms, 300 watt 4
ohm) in "Class AB." Other features include low level
of negative feedback in only a single amplification stage, no
output inductors, optical-coupled floating bias, lots of regulation...
MultiCaps, Solen... separate fuses for each amplifier power rail...
You get the point. The front panel illumination is adjustable
via rear knob."
By Dennis Barker
"Who said that tube technology was dead?
Moscode has introduced their new 401HR Stereo Amplifier that features
200 watts of advanced hybrid tube technology. This powerful and
refined 401HR delivers crisp, dynamic, and musical 200-watts per
channel of sound using a classic tube driver stage coupled to
MOSFET power outputs. It’s presented in a handsome chassis
with enclosed heatsinks and sexy drop-down front panel for easy
access to the tubes. You can use the factory-supplied tube pairs
or literally tune the sound by changing the driver tubes. The
401HR incorporates every circuit refinement that the company has
made over the last 20 years for the many Moscode 300s still out
there. According to the manufacturer, the new 401HR is a powerful,
nuanced and engaging amplifier; it entices you into the music.
It also features an attractive but discreet edge-lit logo in the
tube window that changes color depending on operating status.
And, for those of you out there who are power mad, a mono switch
parallels the inputs for easy vertical bi-amping. Available with
either a silver or black face plate, the 401HR Stereo Amplifier
carries a price of $4,995."
East is a Sweet Feast
By Mike Quinn
"Jazz bassist George Kaye,
most recently providing bottom for Houston Person and Etta Jones,
also happens to be one of high-end audio’s minor cult figures.
As designer of New York Audio Labs’ Moscode amplifiers in
the 1980s, he created a product still much sought-after on the
used market; I used one for many years and often wish I had never
sold it. Kaye was roaming the halls of the Hilton when he cornered
me and proudly announced he was reviving his classic amp now called
the Moscode 401HR ($4,995), which should be shipping by the time
you read this. The 200-watt per channel amp combines the best
of tube and solid-state technology so you get clear, solid bass
and a warm, transparent midrange. Based on past performance, this
should be a good one."
Secrets of Home Theater and
High Fidelity: Show Report HE2005
Moscode is back with their new true hybrid 200 WPC at 4 ohms
tube/solid state amplifier. The front door flips down for easy
tube replacement. At $4,995 the 401HR stereo amplifier is not
only eye-catching, but sounded excellent.
What the future holds
By John Acton
Von Schweikert's VR-4 JR speakers were also in use in the MOSCODE
room, who were heralding their return with the introduction of
the new 401 HR hybrid amplifier (around $5000). The amp utilizes
a tube driver stage with a Cascode emitter, mated to a MOSFET
output stage rated at 200 wpc into 8 ohms. Internal construction
was top-notch, and the amp has the flexibility to accept a multitude
of small-signal tubes, including 6H30Pi, 6922, 6GU7, 12AU7, etc...
Entertainment 2005: Day 4
By Stephen Mejias
An interesting conversation with GK, Stephen Mejias of Stereophile,
and Lorraine Janeway of Aperion Audio at HE2005
"George walks over, and I continue,
'Well, George was saying that the hi-fi hobby is generally a male
"Ninety-eight percent," she [Lorraine Janeway] agrees.
"It’s very difficult for me to think that women simply
don’t love music as much as men do. What George was saying
was that part of the reason the hobby is so male-dominated is
that it involves tinkering and tweaking, and that women and men
go about the process of listening differently. I’ve been
wondering what you think of that. Why aren’t there more
"I’m glad you asked that," she says. And I’m
Text at Stereophile.com