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For Sale Yaqin SD-CD2 tube buffer

Luxman Amplifiers India

Kannan

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New Yaqin SD-CD2 tube buffer

Details: Unity gain, so totally passive. Add tube audio quality to digital audio and make speakers sound warmer and finer.
It can be installed either between DAC and preamp or between preamp and power amp.
The stock 6J1 tubes are not that great, but what makes the Yaqin a great buy is the availability of some superb replacement tubes from the EF95 family that lifts the level of performance.
I am also offering some of the best of EF95 tubes.

Reason for sale: Planned upgrade to a Yaqin tube pre and power amp or an integrated one.

Main Features of Yaqin SD-CD2:
1. Power transformer manufactured with silicon steel sheet and high-quality oxygen-free enameled copper wire;
2. Completely hand wired. No circuit board;
3. Uses audiophile grade capacitors and metal precision resistors.
4. Heavy duty steel chassis.
5. Two 6J1 tubes replaceable with EF95 family tubes
6. Gold plated input and output jacks
7. Unity gain from input to output

Price: Rs. 13500 plus shipping at buyer's cost and risk.

Replacement Tubes:
The tubes that I am offering include the very best in the EF95 family and all are military grade matched pairs. All are NOS tubes (New Old Stock).
All the tubes are excellent audiophile grade fully matched tubes. I have listed them in the order of my preference.
They give a nice warm tone to the music by reducing digital artifacts for hours on listening.
The tubes are
Gold Grid Voshkod 6ZH1P-EV made in Voshkod factory Russia in the early 70s: 4 pairs (Rs. 2,500 per pair)
Voshkod 6ZH1P-EV made in Voshkod factory Russia in the early 80s: 2 pairs (Rs. 1,000 per pair)
Mullard 8100 made in the 80's in Great Britain: 4 pairs (Rs. 1800 per pair)
GE JAN5654W from GE, made in the 80's Great Britain: 2 pairs. (Rs. 700 per pair)

Interested persons can PM or call on 9840970091.

Link to more pictures
https://photos.app.goo.gl/6FAjhwmUxPiYnMmD3
 

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Kannan

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Messages
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Points
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Location
Chennai
This would also be a great addition to desktop systems or those who are connecting DAC to active speakers or power amplifiers and using software based digital volume control or using the volume control built into the DAC.
Due to its low output impedance, it will easily match with most power amplifiers.
 

Kannan

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Messages
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Points
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Location
Chennai
It will be an excellent addition to your digital chain. Reasonable offers are welcome.
 

Kannan

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Messages
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Points
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Location
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Following tubes and Yaqin buffer still available:

Voshkod Gold Grid: 3 pairs
Mullard 8100: 2 pairs
Philips/GE JAN5654W: Two pairs
 

Kannan

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Updating thread:
One pair of 8100 and 5654w blocked for a FM

Following left:
Yaqin SD-CD2 buffer; Rs. 13500
Voshkod Gold Grid: 6 pairs available all matched pairs: Rs. 2000 pair
One pair: Mullard Philips 8100: Rs. 1500 pair
 

Kannan

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Messages
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Location
Chennai
Payment recd. from Fm and shipped.

Following items available:

Yaqin SD-CD2 buffer preamp: Rs. 13,500
Voshkod Gold Grid: Rs. 2500 per pair (6 pairs available)
Philips Mullar 8100: One pair" Rs. 1500
 

Kannan

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Dropping price on Yaqin to 13000.

Yaqin plus 8100 tube: 14000
Yaqin plus Voshkod tube: 14500
Yaqin with both tubes: 15000
 

Kannan

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Messages
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Location
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Dropping price on Yaqin to 11500.

Yaqin plus 8100 tube: 12000
Yaqin plus Voshkod tube: 12500
Yaqin with both tubes: 13000
 

Kannan

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Back on sale.

Yaqin tube buffer: 10500,

tubes extra. I have a pair each of Philips 8100, JAN and Voshkod
 

Kannan

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Messages
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Location
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Bump for a very good tube buffer. Add the replacement tubes and you are in for a sonic nirvani
 

Kannan

Well-Known Member
Joined
Jan 13, 2008
Messages
2,005
Points
113
Location
Chennai
Bump for a very good tube buffer. Add the replacement tubes and you are in for a sonic nirvani
 

Kannan

Well-Known Member
Joined
Jan 13, 2008
Messages
2,005
Points
113
Location
Chennai
To clarify, it is unity gain buffer. It is not an active preamp and cannot be termed even as a passive pre.
It has no attenuation controls, just one RCA input and one RCA output.
The best place to introduce it in the chain is between preamp and power amp or between DAC/source and power amp if you are using source as pre.
It can also be used with headphone amps or simply between your source and headphone. You will just need the appropriate cables.

When switched off, it will pass the signal directly from input to output and when switched on, will route it via the tubes.

The overall sound signature will depend on the tube, but all the three tubes I am offering are superior over the OE tubes.

The reduction in digital glare is too evident to miss.
 

Kannan

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Joined
Jan 13, 2008
Messages
2,005
Points
113
Location
Chennai
Yaqin Tube buffer with 4 pairs of replacement tubes for 12000 only. The tubes include 2 pairs of gold grid Voshkod 6ZH1P-EV, one pair Philips 8100 and one pair JAN5654W
 

Kannan

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Joined
Jan 13, 2008
Messages
2,005
Points
113
Location
Chennai
It has been pointed out by a couple of members that the price of Yaqin SD-CD2 on ebay/aliexpress is around 155USD with free shipping to India.
Let me point out that it is for 110 volt model and not 220 volt model, which is not available off the rack and the sellers ask for additional time and 20-25USD extra for the 220 volt model.
Also the price does not include custom's duty which I have by the way paid.

So the price quoted is reasonable. However I am open to offers but please no low balling.
 
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