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WE6CA7 Plus Shuguang in Marantz 8B

123.98.231.193

Posted on January 8, 2020 at 22:17:37
gwarejp3
Audiophile

Posts: 62
Location: Tokyo
Joined: August 18, 2017



I was concerned these would be too big to fit; no problem; these are physically a much larger tube than the Golden Lion KT-77's they replace
Amp is wired in triode and using the same bias points as the KT-77's
Early days yet, but the sound is very clear at the top end and midrange is wonderful, a slight compromise with Bass response compared to the KT-77's but maybe after some more burn-in that will improve

 

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Looks great!, posted on January 10, 2020 at 12:16:04
Snafu
Audiophile

Posts: 104
Joined: March 9, 2002
how much voltage have you biased on them.

Please report how the sound builds up.

These are one of the options when my TungSol KT66's wear out.

 

RE: Looks great!, posted on January 10, 2020 at 20:22:25
gwarejp3
Audiophile

Posts: 62
Location: Tokyo
Joined: August 18, 2017



Snafu; very pleased with these, they came with a spec. sheet which suggest Ia : 39mA

nice build quality with a ceramic base wrapped in metal

I've owned the same Amp for over 20 years and tried a variety of tubes and if I had to

replace the current quad it would be with WE6CA7's

Graham

 

RE: Looks great!, posted on January 11, 2020 at 04:18:28
Snafu
Audiophile

Posts: 104
Joined: March 9, 2002
Thank You Graham.

I have had my power amps (Nelson Audio Image M9) over fifteen years and imo current production EL34 variants are pretty good compared to "at the time" production tubes.

Looks like this is my next power amp tube. Only down side is i need eight of them.... €€€

With my power amps SQ improved a lot with 12AU7 -> Shuguang 6N8P "globe" and EF86 -> Philips E80F


 

RE: WE6CA7 Plus Shuguang in Marantz 8B, posted on January 11, 2020 at 06:42:35
dave slagle
Manufacturer

Posts: 5127
Location: NYC
Joined: April 27, 2001
Yet another tube with a WE designation that Western Electric never made.

dave

 

But if WE HAD produced a 6CA7 it would be exactly like these......(nt), posted on January 11, 2020 at 12:04:24
Steve O
Audiophile

Posts: 9570
Location: SE MI
Joined: September 6, 2001

 

Yep...., posted on January 11, 2020 at 13:15:04
Ivan303
Audiophile

Posts: 40478
Location: Cadiere d'azur FRANCE - Santa Fe, NM
Joined: February 26, 2001
EXACTLY like those!



 

RE: Yep...., posted on January 11, 2020 at 18:44:49
Tre'
Industry Professional

Posts: 14178
Location: So. Cal.
Joined: February 9, 2002
Do you think the engineers at Shuguang have the chops of the WE engineers?


Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"

 

RE: WE6CA7 Plus Shuguang in Marantz 8B, posted on January 11, 2020 at 21:14:52
crooner
Audiophile

Posts: 2513
Location: San Diego, CA
Joined: April 13, 2003
Great looking tubes. I am glad the sound is great also.
I want to try them on my 8B. Where did you purchase them from?

 

RE: WE6CA7 Plus Shuguang in Marantz 8B, posted on January 12, 2020 at 14:51:39
gwarejp3
Audiophile

Posts: 62
Location: Tokyo
Joined: August 18, 2017



China-HiFi-audio.com; US 249.00 a Quad, postage ( to Japan ) was 35.00

Arrived in 4-5 days, bombproof packaging

Best

Graham

 

RE: WE6CA7 Plus Shuguang in Marantz 8B, posted on January 12, 2020 at 15:14:22
crooner
Audiophile

Posts: 2513
Location: San Diego, CA
Joined: April 13, 2003
Thank you. Great price too!

 

RE: WE6CA7 Plus Shuguang in Marantz 8B, posted on January 19, 2020 at 07:42:21
Capt. Z
Audiophile

Posts: 1166
Location: el Campo
Joined: February 13, 2000
Keep us posted on your experience with these tubes. I will need to replace my Golden Lion kt77 this year.

 

RE: WE6CA7 Plus Shuguang in Marantz 8B, posted on January 19, 2020 at 08:31:58
gwarejp3
Audiophile

Posts: 62
Location: Tokyo
Joined: August 18, 2017
Only about a weeks use on these: they sounded great right out of the box but now the Bass has settled down and I am very ( very ) pleased with these
I have owned the Marantz 8B over 20 years now; it's a reissue, one of the ones that VAC made and uses Dutch Philips E-90F's as a 6BH6 and vintage Grey-plate Hitachi 6CG7's; I have used Ei Fat bottles, and a variety of new manufacture and NOS over the years and the best tubes I've had have been the Golden Lion KT-77's up until now but the Shuguang "If-only-WE-had-made-'ems" are sounding the best I've heard


Graham

 

RE: WE6CA7 Plus Shuguang in Marantz 8B, posted on June 18, 2020 at 11:19:12
mychao49@gmail.com
Audiophile

Posts: 1
Joined: June 18, 2020
I am also concerned about its size. Can you send me their dimensions if not too much of trouble. Thanks.

mike

 

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