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Dussun's V6i Hyper Class A Integrated Amplifier

Wharfedale EVO4.1 Bookshelf Speakers

bazee

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Dussun's V6i Hyper Class A Integrated Amplifier

Hello Friends,

I apologise if this post looks like a outright copy from a catalog( actually it is!) and if i look a chinese elctronic seller (which i am not!)

But I was fascinated by the specs and whatever few reviews i got of this amplifier. Some users say it is as powerful as a nuclear reactor and others have found it flat(not dynamic/bright).
It costs around 900-1200 USD.Shipping and customs extra.

What are your opinion about the company and the amp..

Correct me if i am wrong but Chinese amps/electronice is one of the cheapest ways to own a high-end hi-fi system that one can only dream of and that to without the risk of going bankrupt.
Most audio pundits say the chinese electronics give performance of a system twice or thrice its value.

SOME OTHER BRANDS I SAW :-

JOLIDA
AUDIO SPACE
SHANLING
XINDAK AND BADA.

v6i_logo.jpg


About Hyper Class A

The Dussun V series is a new kind of large power hyper class A integrated amplifier. The Hyper Class A is a Green Class A solution, whose technically successful adaptive-bias circuit achieves the extra large class A power output objective under conditions of low-power consumption and low heat producing. The adaptive-bias circuit with an ideal specification permits the amplifier to maintain class A mode output even if the speakers impedance drops largely and output power increases several times. This situation is different from the traditional pure class A amplifiers inevitable situation of returning to class B when the speaker load impedance goes down, and is much close to the ideal class A amplifier essence.

Overview of V6i integrated amplifier

The V6i is an extension of Dussuns high-end product line. The objective of the development of the V6i, built on mature Dussun products, is:

? improve sound quality completely;

? enhance the power output stage driving; and,

? control capacity upon speakers.

Special design features of the V6i include: the output stage peak current was designed up to 60 A, and the transformer capacity per channel was designed up to 600 VA. In order to increase sound quality, and to modify the V6i harmonic spectrum for much lower odd order harmonic wave energy, V6i employed the adaptive-bias circuit with an ideal specification.

Its multi-stage power supply and system loop not only increased the V6i signal-to-noise-ratio to a higher level, but also suppressed the AC power source hum which many times contaminates the purity of the music under a large power output, as well delivered extreme high purity and silence of aural feeling while playing strong dynamic music segments.

The inner configuration of the V6i followed Dussuns successful full-symmetrical style. This effective configuration is essential to make the V6i achieve a large power output and low noise objective.

There is an independent dedicated protection circuit with complete functionality for per channel, which can auto-diagnose probable overload and malfunction, then auto-protect accordingly.

The preamplifier stage and power amplifier stage are open to the user, allowing the user to use V6is either preamplifier stage or power amplifier stage. For general use, V6is preamplifier stage and power amplifier stage were linked by a pair of link pins. If the link pins are removed, it is easy for the user to use either V6is preamplifier stage or power amplifier stage respectively. The volume control is built in the preamplifier stage, so the preamplifier output signal level is controlled by the volume control knob.

As a terminal open for the user, the preamplifier stage is driven by a high performance low inner resistance buffer, which can drive many kinds of power amplifiers with more than 600 Ohm input impedance. The volume is not controlled by the volume control knob if the V6is power amplifier stage is operated solely.

The IR (infrared) Remote Control can be used to control the V6is volume and input signal selection.

True Dual Mono configuration
Output power: 150W@8?, Class A
300W@4?, Class A

Infrared remote control
The preamp and power amp stages may be used separately
Dual Mono ultra-low-noise toroidal transformer
Over 32,000 MFD of filter capacitance per channel
Minimal internal wiring
Ultra-short signal path
Non-magnetic, non-resonant aluminum cover
Non-invasive protection system
Microprocessor-controlled passive volume potentiometer
High quality. double-sided printed circuit boards
Van den Hul CS-122 HYBRID loudspeaker cable for power transfer
Exclusive custom Dussun gold-plated high-current audio connector for
amplifier and loudspeakers

Specifications:

Preamplifier
Input Impedance:
47K?

Voltage Gain:
9.5dB0.5dB

Frequency Response:
5Hz?20KHz 0.5dB

Signal to Noise Ratio:
?100dB?A-weighted?

Maximum Output Level:
?12Vrms?THD?0. 1%?

THD+Noise:
?0.03%?10Hz?20KHz, 1.5V?


Amplifier
Input Impedance:
100K?

Voltage Gain:
29.5dB0.5dB?1KHz?

Output Power:
2150W?8??

2300W?4??

Frequency Response:
5Hz?20KHz 1dB

THD+Noise:
?0.2%?20?20KHz?250W?8??

Damping Factor:
?200

Signal to Noise Ratio:
?116dB?A-weighted?


Overall
Dimensions:
434?W?180?H?420?D? mm

17?W?7.09?H?16.54?D? in

Shipping Weight:
31 kg

68.34 lb
 
Last edited:

gopi

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Mar 25, 2008
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Location
Hyderabad, India
If such amps interests you check these as well: Jungson JA88d and Korsun V8i.
I know of a Korsun on sale, a bit costly though. Let me know if you are interested.
 

RB9

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May 4, 2008
Messages
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If such amps interests you check these as well: Jungson JA88d and Korsun V8i.
I know of a Korsun on sale, a bit costly though. Let me know if you are interested.

Hi, Korsun & Dussun are the same company ! Korsun used to make amps for Mark levinson's " Red Rose music " ( OEM) !! They used to make Passion & Affirmation models , later due to some legal complications they had to change the name of the brand from Korson to Dussun !
They have done some changes also for the better, like the small amp passoin.......in the new amp you can enjoy the Bold nob of the volume control & at the same time the sound increases gradually instead of sudden shock as seen in the old models ! Pls find below the site ref to check Dussun & Mark levinson's red Rose !
dussun
GoodSound! "Equipment" Archives
Red Rose Music Amplifiers
Hope it helps.............

RB9:)
 

afj

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Joined
Sep 12, 2008
Messages
2,110
Points
83
Location
hyderabad
from what i've read / chatted (and thats quite a lot), the dussun is built like a tank with power that'll take you to the moon and back. more than worth its money. the only drawback is that its sounds a little clinical. people recommend using a separate pre and using the dussun as a power
 

bazee

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Joined
Oct 23, 2008
Messages
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Location
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yes a musical pre preferable tube-based is ideal when combined with the dussun's power.
but that increases the price to make it high.
Also in one review the comment was made that the pre-power connection is less than perfect and jumpers are not that good.
I didn't understand it but that was what it was said.

regards
 
Last edited:

afj

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Joined
Sep 12, 2008
Messages
2,110
Points
83
Location
hyderabad
yes a musical pre preferable tube-based is ideal when combined with the dussun's power.
but that increases the price to make it high.
Also in one review the comment was made that the pre-power connection is less than perfect and jumpers are not that good.
I didn't understand it but that was what it was said.

regards

the amp has pre out / power in externally. those are the connectors you are talking about. and the jumpers are the circuits that connect this. this gives the option of bypassing the pre section (or the power section) of the amp. yes i have heard too that the connectors dont seem that good
 

dvdmk

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Joined
May 5, 2008
Messages
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Location
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Dussun's V6i Hyper Class A Integrated Amplifier

Hello Friends,

I apologise if this post looks like a outright copy from a catalog( actually it is!) and if i look a chinese elctronic seller (which i am not!)

But I was fascinated by the specs and whatever few reviews i got of this amplifier. Some users say it is as powerful as a nuclear reactor and others have found it flat(not dynamic/bright).
It costs around 900-1200 USD.Shipping and customs extra.

What are your opinion about the company and the amp..

Correct me if i am wrong but Chinese amps/electronice is one of the cheapest ways to own a high-end hi-fi system that one can only dream of and that to without the risk of going bankrupt.
Most audio pundits say the chinese electronics give performance of a system twice or thrice its value.

SOME OTHER BRANDS I SAW :-

JOLIDA
AUDIO SPACE
SHANLING
XINDAK AND BADA.

v6i_logo.jpg


About Hyper Class A

The Dussun V series is a new kind of large power hyper class A integrated amplifier. The Hyper Class A is a Green Class A solution, whose technically successful adaptive-bias circuit achieves the extra large class A power output objective under conditions of low-power consumption and low heat producing. The adaptive-bias circuit with an ideal specification permits the amplifier to maintain class A mode output even if the speakers impedance drops largely and output power increases several times. This situation is different from the traditional pure class A amplifiers inevitable situation of returning to class B when the speaker load impedance goes down, and is much close to the ideal class A amplifier essence.

Overview of V6i integrated amplifier

The V6i is an extension of Dussuns high-end product line. The objective of the development of the V6i, built on mature Dussun products, is:

? improve sound quality completely;

? enhance the power output stage driving; and,

? control capacity upon speakers.

Special design features of the V6i include: the output stage peak current was designed up to 60 A, and the transformer capacity per channel was designed up to 600 VA. In order to increase sound quality, and to modify the V6i harmonic spectrum for much lower odd order harmonic wave energy, V6i employed the adaptive-bias circuit with an ideal specification.

Its multi-stage power supply and system loop not only increased the V6i signal-to-noise-ratio to a higher level, but also suppressed the AC power source hum which many times contaminates the purity of the music under a large power output, as well delivered extreme high purity and silence of aural feeling while playing strong dynamic music segments.

The inner configuration of the V6i followed Dussuns successful full-symmetrical style. This effective configuration is essential to make the V6i achieve a large power output and low noise objective.

There is an independent dedicated protection circuit with complete functionality for per channel, which can auto-diagnose probable overload and malfunction, then auto-protect accordingly.

The preamplifier stage and power amplifier stage are open to the user, allowing the user to use V6is either preamplifier stage or power amplifier stage. For general use, V6is preamplifier stage and power amplifier stage were linked by a pair of link pins. If the link pins are removed, it is easy for the user to use either V6is preamplifier stage or power amplifier stage respectively. The volume control is built in the preamplifier stage, so the preamplifier output signal level is controlled by the volume control knob.

As a terminal open for the user, the preamplifier stage is driven by a high performance low inner resistance buffer, which can drive many kinds of power amplifiers with more than 600 Ohm input impedance. The volume is not controlled by the volume control knob if the V6is power amplifier stage is operated solely.

The IR (infrared) Remote Control can be used to control the V6is volume and input signal selection.

True Dual Mono configuration
Output power: 150W@8?, Class A
300W@4?, Class A

Infrared remote control
The preamp and power amp stages may be used separately
Dual Mono ultra-low-noise toroidal transformer
Over 32,000 MFD of filter capacitance per channel
Minimal internal wiring
Ultra-short signal path
Non-magnetic, non-resonant aluminum cover
Non-invasive protection system
Microprocessor-controlled passive volume potentiometer
High quality. double-sided printed circuit boards
Van den Hul CS-122 HYBRID loudspeaker cable for power transfer
Exclusive custom Dussun gold-plated high-current audio connector for
amplifier and loudspeakers

Specifications:

Preamplifier
Input Impedance:
47K?

Voltage Gain:
9.5dB0.5dB

Frequency Response:
5Hz?20KHz 0.5dB

Signal to Noise Ratio:
?100dB?A-weighted?

Maximum Output Level:
?12Vrms?THD?0. 1%?

THD+Noise:
?0.03%?10Hz?20KHz, 1.5V?


Amplifier
Input Impedance:
100K?

Voltage Gain:
29.5dB0.5dB?1KHz?

Output Power:
2150W?8??

2300W?4??

Frequency Response:
5Hz?20KHz 1dB

THD+Noise:
?0.2%?20?20KHz?250W?8??

Damping Factor:
?200

Signal to Noise Ratio:
?116dB?A-weighted?


Overall
Dimensions:
434?W?180?H?420?D? mm

17?W?7.09?H?16.54?D? in

Shipping Weight:
31 kg

68.34 lb





Hi Any idea of the price in India?
 

bazee

New Member
Joined
Oct 23, 2008
Messages
222
Points
0
Location
Pune
Jungson JA-88D Class A Intergrated Stereo Power Amplifier


JungSon's unique Class A, full-balanced and non-negative feedback circuit
80 W class A output per channel
Balanced (XLR) and non-balanced (RCA) inputs
JungSon's unique designed heat sink - a 1.8 m2 copper radiator
Nature hard wood remote control with digital stepping volume adjustment
Fully sheathed and anti-shock aluminium alloy case

Ocean blue LED power meters

a1da_1.JPG



Specifications


Power: 80W per channel (Class A, RMS 8 ?)
THD: ?0.05% (1 kHz/1W)
S/N ratio: ? 100 dB
Frequency response: 20 Hz -20 kHz ( 0.5dB)
Input impedance: 100k ?
Output impedance: 4-8 ?
Voltage: 220-240V
Size (LxWxH): 470x430x190 mm
Weight: 29.5 kg


Another chinese amp from a reputed brand.
Price : 800 US.

regards
 

bazee

New Member
Joined
Oct 23, 2008
Messages
222
Points
0
Location
Pune
Jolida JD801S EH6550 Tube Amplifier,

0de3_1_bol.JPG


Technical Data:

?Power output: 50W x2
?Frequency Response: 15Hz - 80KHz (+/- 1dB)
?S/N: >=85dB
?THD: <=0.5% (1KHz, 50W)
?Output Impedance: 4 ohms, 8 ohms
?Input Impedance: 100 Kohms
?Input sensitivity: 350 mV
?Tube: KT88/6550 x4; 12AX7A x1; 6H8C x2
?Size: 460 x 285 x195 mm
?Weight: 23 kgs

?Tubes: 6H8C X2, 12AX7A X1, EH6550 X4.
?ALPS volume control, gold plated terminals.

It sounds sweet & balance, fast but good musical & clear, analysis is also very good.
 

afj

Well-Known Member
Joined
Sep 12, 2008
Messages
2,110
Points
83
Location
hyderabad
Hi Any idea of the price in India?

i dont think they are available in india. you can check the website if you want to buy from china. be wary that certain class a amps produce a lot of heat and may not operate in conditions above 35 degrees

Home
 

nuRoXX

New Member
Joined
Aug 29, 2008
Messages
49
Points
0
Location
Hamburg
Hi bazee and others,

the Dussuns are fine, whether the V6i, the V8i or the KS-99 (the smallest stereo amp from Dussun). I did listen to all three models and owning the V8i since four years or so.

And yes, the Dussuns are a kinda clinical in its reproduction. Or better saying: they are simply amplifying :) <- this is great, or?

In combination with a speaker which does not bends frequencies it might be a little too much... the straightforwardness, coming to the point etc. (wondering how it could be too much...).

However, in conjunction with a tube cdp or a "softer" transi like a Marantz you are getting a bit more "softness" without loosing details -> would not spend in an additional pre.

For a class A amp the Dussun remains relatively cool, despite of sound levels you are requesting. A Classic No. 6.6 i.e. is producing a lot more heat (hey...presently having just slightly above 0 degree celcius... I should connect that piece of chinese metal right now).

Whether a chinese amp brings you relatively cheap into the "high-end" world...? If prestige and design does not matter -> Go for it ;)
 
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