Jeff
Rowland Design Group is dedication to building
electronic components capable of unveiling the
rich, emotional tapestry of music in a personally
involving way. Craftsmanship shares equal footing with sonic
innovation. The result is products that offer
unrivaled musicality packaged in chassis designs
of unparalleled beauty.
The end
result; the
creation of audio equipment of enduring value
which offer a key that assists you in unlocking
the vast structure of emotion that is...music.
True benchmarks in audio design are rare. Major innovations such as true differential mode balanced circuitry, transformer coupling, remote controlled
pre-amplification and battery power
supplies are prime examples of these creative leaps of faith. All are examples
of the visionary achievements of Jeff Rowland design group, a company that continuously pushes the envelope of high end audio.
For nearly
20 years Jeff Rowland has produced many of the
most widely acclaimed products in audio history.
Today, the torch has passed to such new designs
as the Model 9T Amplifier and the Coherence
Preamplifier - products that have earned numerous
international awards for product design
excellence.
and coming soon
- Corus Pre amplifier
- 625 stereo power amps
- 925 reference mono power amps
The Continuum
Integrated Amplifier
The
Continuum Integrated amplifier represents JRDG's latest thoughts
addressing sonic purity, advancements in circuit technology, and
ergonomic design.
As typical for JRDG
products, the entire chassis of the Continuum is milled from a solid,
massive block of 6061 aluminum to provide a vibration-free and EMI
resistant enclosure for sensitive audio circuitry.
Dual line-level outputs
(balanced and unbalanced), balanced and unbalanced inputs, and preamp
bypass inputs allow unprecedented compatibility with virtually any A/V
component in both stereo and multi-channel installations.
A dual rate volume control
allows precision level adjustments over nearly a 100 dB range. The
volume control incorporates a permanently noiseless optical encoder that
will always maintain its tactile feel, accuracy, and channel balance at
all settings.
Optional high quality
internal phono preamp modules are available.
As in the flagship 300
series, the Continuum 500 incorporates Power Factor Correction (PFC)
circuitry that provides a near linear transfer of energy from power line
to speaker outputs, resulting in unprecedented control of the
loudspeaker/amplifier interface.
As with all JRDG products,
the Continuum Integrated Amplifier redefines the state of the art of its
product category.
The Criterion Preamplifier
On very rare occasions, one
person's vision encompassing a life's experience and creativity will merge and
come to fruition in a work of art unequalled among peers. Jeff Rowland proudly
presents his Criterion Preamplifer.
The Criterion incorporates the
most tried and proven concepts trailblazed by JRDG over the 25+ years of
successfully developing the finest audio products available: battery power that
provides the cleanest possible power source and isolation from the power grid,
balanced circuitry, transformer coupling and much more. Additionally new ideas
resulting in the further elimination of haze-inducing vibration are included in
this no-holds-barred design.
Additional details are
forthcoming, but words alone cannot adequately describe the sonic excellence of
this unique product. It must be heard to comprehend this outstanding
achievement.
The Capri pre Amplifier with
Remote
The 102 Power Amplifier
SMALL
SIZE CHASSIS CAPRI PRE AMPLIFIER WITH REMOTE CONTROL
AVAILABLE WITH 4 LINE LEVEL INPUTS OR OPTIONAL PHONO INPUT
AVAILABLE BOTH BALANCED AND RCA INPUTS 102 POWER AMPLIFIER OFFERS 100 WATTS PER CHANNEL WITH BALANCED
-ENOUGH POWER TO DRIVE MOST SPEAKERS IN THE MARKET PLACE
TODAY.
The
Sound-the first impression is Where did all that power come from?
This is a small package with a surprise but yet what we expect
Jeff Rowland Design products to sound like. True to the
Music.
2.6”(H) x 13.7” (W) x 6.2” (D) Capri
2.7"(H)
x 13.7" (W) x 7.5" (D) 102 Power Amplifier *Available in
Black Only.
The Model 102 - stereo amplifier
At Jeff Rowland Design
Group, truly great audio has been reduced to this: The astonishingly
powerful and incredibly efficient Model 102 stereo amplifier, definitive
proof that good things can come in small sizes.
Utilizing the same ICEpower™ patented power conversion technology that
has revolutionized modern amplifier design, the Model 102 packs a true
100 watt wallop in a tiny 3x13x7 inch machined solid aluminum housing
virtually immune to resonance.
The newest member of the JRDG family of fine audio components,
the 102 is the product of an obsessive quest to perform one of modern
electronics' most difficult balancing acts - the creation of clean,
dynamic power without the
unwanted and, now unwarranted, byproducts of excessive heat and mass.
The Model 102 achieves this goal by the innovative application of
impressive new developments in power supply and power output stage
design. This 10-pound marvel features a balanced input/output topology
combined with true
dual-mono power supplies to deliver handsomely on the promise inherent
in its elegant appearance.
Pound for pound, the Model 102 is simply an amplifier without peer,
producing an entrancing and satisfying musical experience far out of
proportion to its dimensions... and at a price that redefines value.
The JRDG Model 102, size one up and discover the true state of audio
excellence, from the Jeff Rowland Design Group.
Welcome aboard the flagships of Jeff
Rowland Design Group's fleet of premium quality amplifiers, the 300
Series. Prepare to be transported into a dimension of reproduced
reality that is uncompromising and unrivaled in the world of high-end
audio.
The multiple channel configurations of
the 300 series allow them to be used as the cornerstone of an
ultra-high-end audio system or the finest of home theater systems. With
output powers beginning at 250 watts per channel, the 300 series
amplifiers are able to drive any loudspeaker with the control and finesse
required to bring the greatest dynamics and subtlest details to
life.
To add to their versatility, the 300
series has employed new power supply technology. The 300 Series power
supply incorporates active power factor correction circuitry that assures
full utilization of the electrical system. The power supply also offers
exceptional immunity from all sources of noise and voltage variations.
Removing these last layers of noise allows you to hear exactly what the
artist intended. Jeff Rowland Design Group has made the amps more compact,
electrically efficient, and cooler-running than their predecessors, and
thus more conducive to enclosed custom installation applications. The 300
Series' energy efficiency approaches eighty-five percent, which is up to
ten times the operating efficiency of conventional amplifiers. By greatly
reducing unwanted heat, the amplifiers do not impose any restrictions upon
their physical placement.
Model 312 Stereo Amplifier
Innovative ICEPOWER™ power conversion
technology inspired the development of the 300 Series. These amplifiers
represent the top of the line statement in amplifier design that
effectively restates the traditional relationship between power and
efficiency. They also represent Jeff Rowland Design Group's on-going
efforts to remove the boundaries between reproduction and reality.
The Model 201 Mono
Amps
A new amplifier design, like all other creative
pursuits, borrows
lessons learned from previous
successes.
The
Model 201 is the direct beneficiary of the
knowledge gleaned from the development of the
300 Series. While the 300 Series represents our
no-holds-barred utilization of these new
concepts to achieve the pinnacle of audio
reproduction, the Model 201 exploits those
lessons learned to create a product that
extracts the full capabilities of these new
technologies, yet accomplishes this feat in an
extremely efficient, ecologically-sensitive,
low-cost package.
Specifications
Output Power
250 Watts
500 Watts
Continuous RMS
@ 8 ohms
@ 4 ohms
Frequency
Response
5 Hz - 70kHz, 3dB
Peak Output
Current
>45 Amps
Dynamic Range
117 dBA
THD + Noise,
0.1W-500W/4 ohm
<.1%, typically
.01 @ 1kHz
CCIF
Intermodulation Distortion, 19/20kHz
<.002%
Damping Factor @
1 kHz
275.
Overall Gain:
Selectable Internal
Jumper,
26 or 32 dB
Input Impedance
40k ohms
Common Mode
Rejection Ratio
>90dB, 20 Hz 20
kHz
Absolute Phase:
Non-inverting, Pin 2
Positive
Inputs
1 x Balanced XLR
(Unbalanced operation requires an optional
XLR to RCA adapter)
The
Continuum Integrated amplifier represents JRDG's latest thoughts
addressing sonic purity, advancements in circuit technology, and
ergonomic design. 
