KONDO AUDIO NOTE

KONDO
M7 HERITAGE PREAMLIFIER / 2xmm phono

$ 459,000
Classic M7 preamplifier was released in the late 1980s. It gained fame along with the legendary power amplifier ONGAKU.
While maintaining the emotional sound impression of this preamplifier, it was polished with updated crafts and technologies. Base on a well-thought-out circuit and high-quality parts that were inspected further by our eyes and hands, performance is improved and matching with modern systems is also improved.
On top of specification, wide and stable sound stage, lively emotions, and low noise level are realized.



Phono amplifier unit
The modularization of the phono amplifier realizes advantages of both handwiring and short signal paths comparable to PCB. The signal loop is minimized by placing a decoupling capacitor near the module independently.
The SRPP circuit of ECC803S (12AX7) are adopted for the first stage. 6072 (12AY7) are used for plate follower, cathode follower of the second and the third stage. It achieves a highly accurate equalization with both vivid and quietness.


Line amplifier unit
The line amplifiers are also modularized like a phono amplifier unit, and the decoupling capacitors are located near right and left independently.
Direct couple of plate follower and cathode follower using 6072 (12AY7) achieves the lower output impedance 500Ω and 18Hz cutoff frequency (at 20kΩ load). It has strong driving capabilities.


Power supply, the shunt heater circuit
Rectification tunes is 6CA4. The power transformer and chokes are arranged so that minimum vibration is obtained. 3 kinds of decoupling capacitors are selected for well balance of tonal characteristics. Power supply is strengthened by clearly separating the ripple filter capacitors and decoupling capacitors.
Combining capacitor groups and a newly developed shunt type DC heater power supply circuit, ripples at power line is highly eliminated and heater voltage is regulated within ±5%.

Ultra-high-quality parts
Audio Note original silver foil capacitors, original electrolytic capacitors, silver lead resistors, SSW wiring material, copper main chassis, interconnect KSL-VzII, original RCA Jacks, original power transformers, chokes and a lot. Other parts such as market capacitors and resistors are selected carefully for each specific positions.

Specifications
Product Stereo preamplifier
Product M7 Heritage
Model M7H
Input / Impedance Phono RCA 2pairs, Unbalanced / 47kΩ
Line RCA 3pairs, XLR 1pair, Unbalanced / 50kΩ
Output RCA x2, XLR x1 (unbalanced, over 20 kΩ load)
RIAA Declination ±0.3dB (30Hz-20kHz, Excluding LCF)
Frequency Response 8Hz ~ 280kHz (+0dB, -3dB / with 100kΩ load, Unbalanced)
Distortion (THD) 0.07% (1kHz, 1V, Line part)
Noise less than 0.15mV(Line),
less than 5mV(Phono)
Gain 25dB (Line in → Line out),
63dB (Phono in → Line out)
Vacuum Tubes ECC803S x2, 6072 x2 (Phono)
6072 x4 (Line)
EZ81 x1 (Rectification)
Power consumption 38W
Dimensions 438mm(W) 160mm(H) 330mm(D)
(excluding protrusions)
Weight 15kg














K

KONDO AUDIO NOTE
G-1000i REFERENCE PREAMPLIFIER/Line only

$ 864,000
As our flagship preamplifier, G-1000 reaches Audio Note's highest specifications and quality standard. It is made of highest quality parts with uncompromising circuit design and layout. Our goal is simple : To get the ultimate expressions for music ! Through G-1000, you can hear grand soundstage filled with fine presence. Your audio will sound colorful, with rich ambience yet amazing instruments positioning.

Features
Newly developed 50 steps attenuator. The sheer volume of musical information uncovered is overwhelming.
Vacuum tubes adopted are 6072. Basic circuit is direct-coupling of plate follower and cathode follower. The parallel configuration (of plate follower) secured low output impedance for higher clarity. True balance input is added to G-1000 through adopting new in-house silver winding input transformer.
Capacitors groups are distributed along the line stage. This design serves big power supply capacity while signals loop can be shortened as much as possible.
All premium parts are used at G-1000. SSW (Silk Silver Wire), silver foil signal capacitors, original power transformer and choke are adopted. Main chassis is made of copper.
For providing a secure operating condition for G-1000, a large scale shunt type heater power supply circuit is newly used.

Audio Note Original Attenuator
50 steps attenuator (50kΩ) is our new original design. The aerospace grade resistors were chosen after a long period of serious listenings and comparisons. This new attenuator unleash more details, but much quieter because resistors are mounted on a best quality rotary switch and shielded by a full copper chassis.

Line amplifier unit
Modular design is one of the iconic designs of Audio Note new generation amplifiers. It is now fully symmetric and independent for left and right channels at G-1000. With the help of well distributed capacitor groups, the signal loops are shortened at the line amplifier unit.
For best matching with solid state or low input impedance power amplifier, G-1000 output impedance is 600Ω and cutoff frequency reaches 18.5Hz (under 20kΩ load).

Power supply, the shunt heater circuit
Rectification tunes is 6CA4. The power transformer and chokes are arranged so that minimum vibration is obtained. 3 kinds of decoupling capacitors are selected for well balance of tonal characteristics. Power supply is strengthened by clearly separating the ripple filter capacitors and decoupling capacitors.
Combining capacitor groups and a newly developed shunt type DC6.3V heater power supply circuit, ripples at power line is highly eliminated and heater voltage is regulated within ±5%.

Ultra-high-quality parts
Audio Note original attenuator unit, silver winding input transformers, copper main chassis, silver foil capacitors, original electrolytic capacitors, silver lead resistors, SSW wiring material, flagship interconnect Ls-41, original RCA Jacks, original power transformers, chokes and a lot. Other parts such as market capacitors and resistors are selected carefully for each specific positions

Specifications
Product Stereo line preamplifier
Model G-1000 i
Frequency Response 8Hz ~ 280kHz (+0dB, -3dB / with 100kΩ load, Unbalanced)
15Hz ~ 90kHz (+0dB, -3dB / with 100kΩ load, Balanced)
Gain 25dB
Input / Impedance RCA 4pairs, Unbalanced / 50kΩ
XLR 1pair, Balanced (transformer, 2:Hot) / 50kΩ(12.5kΩ/12.5kΩ)
Output RCA x2, XLR x1 (unbalanced, over 20 kΩ load)
Noise less than 0.15mV
Vacuum Tubes 6072 x4, 6CA4 x2
Power consumption 41W
Dimensions Main unit 320mm(W) 160mm(H) 414mm(D)
Power supply unit 320mm(W) 160mm(H) 414mm(D)
(excluding protrusions)
Weight Main unit 17kg
Power supply unit 20kg

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KONDO AUDIO NOTE
G-70 i PRE-AMPLIFIER/LINE ONLY

$ 279,000
Aiming to get the best of both worlds.
Having elegant sound and good modern specifications, G-70 use the best components which were selected after long time listening tests.
Strong power supply, optimized wirings and layout, new heater circuitry etc. All for contributing the best sound quality.
Result is in addition to the best sound quality from a tube preamplifier, G-70 also has the specifications to compete with the best solid state preamplifier.
Features
-High quality handcrafting with module style line amplifier section, best component placements, signal wiring and ground layout.
-Strong power supply section along with 700uF huge reservoir by combining 3 types of capacitor in individual left and right channel. Delivering natural and stress-free music over the whole frequency band.
-The newly developed DC heater circuit uses all premium parts selected through long time listening tests.
Design.