Sunvalley SV-Pre1616D 115/230 version (point to point pre-amp project)
Made in Japan (Nagoya)
SunValley SV-Pre1616D Tube Line Stage Kit Review | Wall of Sound | Audio and Music Reviews
AVAILABLE now $975.00
Assembled by Sunvalley with 2X VCAP ODAM 4.7uf x 2 $1,525.00
EQ1616D Phono Amp
- 12 AX 7 JJ ECC 82/12 AU 7
- 12 AX 7 GD 12 AU 7
- Mullard CV 4003/12 AU 7 (3 matched) SOVTEK 5 AR 4
You can use the following combination
① 12 AX 7 - 12 AX 7 - 12 AX 7 (Sharp and high contrast)
* Standard combination (SV - 722 Marantz type and same circuit)
② 12 AX 7 - 12 AX 7 - 12 AU 7 (Skeletal feeling and entity feeling of medium low range)
* SV - 722 Mckin type sound image Reproduced
③ 12 AU 7 - 12 AU 7 - 12 AU 7 (round and resonate rich)
※ Featuring a rich overtone feeling of the SV - 310 series
Input: 4 lines [Input 4 can be changed to USB input (option)]
Input Volume: Yes
frequency response: 15 Hz ~ 70 kHz (-3 dB)
gain: 15 dB
size: 250W, 225D, 135H (mm ) ※ including protrusions
weight: 3.6 kg
[
Made in Japan (Nagoya)
SunValley SV-Pre1616D Tube Line Stage Kit Review | Wall of Sound | Audio and Music Reviews
AVAILABLE now $975.00
Assembled by Sunvalley with 2X VCAP ODAM 4.7uf x 2 $1,525.00
EQ1616D Phono Amp
- 12 AX 7 JJ ECC 82/12 AU 7
- 12 AX 7 GD 12 AU 7
- Mullard CV 4003/12 AU 7 (3 matched) SOVTEK 5 AR 4
You can use the following combination
① 12 AX 7 - 12 AX 7 - 12 AX 7 (Sharp and high contrast)
* Standard combination (SV - 722 Marantz type and same circuit)
② 12 AX 7 - 12 AX 7 - 12 AU 7 (Skeletal feeling and entity feeling of medium low range)
* SV - 722 Mckin type sound image Reproduced
③ 12 AU 7 - 12 AU 7 - 12 AU 7 (round and resonate rich)
※ Featuring a rich overtone feeling of the SV - 310 series
Input: 4 lines [Input 4 can be changed to USB input (option)]
Input Volume: Yes
frequency response: 15 Hz ~ 70 kHz (-3 dB)
gain: 15 dB
size: 250W, 225D, 135H (mm ) ※ including protrusions
weight: 3.6 kg
[
Last edited:
Sun Valley SV-Pre1616D Build results
I saw Victor at THE SHOW, its always great to see what new things he has cooked up.
He didnt have the kit on hand.. didnt want to ship me a kit with instructions in Japanese.
After seeing the schematic and the numbers in English I knew I could do it.
Anyone who has built a dynaco can do this.
The PS on the PCB is awesome... the rest is point to point and simple instructions gets it done.
I did 1 upgrade, I swapped the stock Vol pot for an Alps of the same value. Super ease to source. I did try and use my own RCA but would have had to open the holes. In the end it was easier to use the kit as shipped.
Sonics... this is a real winner. Very detailed and quite. Its a Tube Pre with a GZ34 rectifier so may not have the SS speed but it was bought for its tone!
This is Japanese audio at its finest... if you think purest is the right direction.
I saw Victor at THE SHOW, its always great to see what new things he has cooked up.
He didnt have the kit on hand.. didnt want to ship me a kit with instructions in Japanese.
After seeing the schematic and the numbers in English I knew I could do it.
Anyone who has built a dynaco can do this.
The PS on the PCB is awesome... the rest is point to point and simple instructions gets it done.
I did 1 upgrade, I swapped the stock Vol pot for an Alps of the same value. Super ease to source. I did try and use my own RCA but would have had to open the holes. In the end it was easier to use the kit as shipped.
Sonics... this is a real winner. Very detailed and quite. Its a Tube Pre with a GZ34 rectifier so may not have the SS speed but it was bought for its tone!
This is Japanese audio at its finest... if you think purest is the right direction.
Attachments
Last edited by a moderator:
12BZ7s draw twice as much heater current compared to the 12AT7, AU7, AX7 family. Three B7s might over-stress the heater supply, the regulator, especially.
Steve
Steve
That's why I stated 'a' 12BZ7. Was thinking of just one (like Mr. Creosote - just one thin mint). I would start in the last slot. Hmmmm........ wondering if I should roll in a pair in my Elekit TU-8500? Maybe this summer.
The 8500 doesn't regulate the filament supply. There is a dropping resistor, iirc, though the BZs might overheat it. Hard to say. The BZ is a high Mu tube. The 8500 is designed for low to medium Mu tubes.
In the SunValley V3 position (output cathode follower) a low to medium Mu tube, say 12AU7 or 12AT7 might be the better bet.
Steve
In the SunValley V3 position (output cathode follower) a low to medium Mu tube, say 12AU7 or 12AT7 might be the better bet.
Steve
Victor - are you offering any options for the SV-Pre1616D?
Am thinking of the switch, volume & balance pots.
Am thinking of the switch, volume & balance pots.
I only offer coupling caps and tube set.. the stock parts are very good from Sunvalley.
Last edited:
ERYN's PRE 1616
\
https://flic.kr/p/2jmhF68
Hi Victor,
Just let you know the SV-Pre1616D finally finished. This P2P is quite straightforward to assemble, the instruction manual has a clear layout of each step, luckily I manage to get it done. The only challenge is to fit in all my upgrade parts, the bigger size resistors and oversize Mundorf film capacitors need quite a bit time to test fit before final installation. Upgrades parts:
NKK DPST power switch
Mundorf film capacitors
Takman REX75 carbon film resistors' & higher wattage resistors for PSU board
Nichicon capacitors
SS rectifiers use UF4007 instead of stock 1N4007s.
PTFE 9P tube sockets
IEC inlet with ground
a revised power supply board
Eryn
\https://flic.kr/p/2jmhF68Hi Victor,
Just let you know the SV-Pre1616D finally finished. This P2P is quite straightforward to assemble, the instruction manual has a clear layout of each step, luckily I manage to get it done. The only challenge is to fit in all my upgrade parts, the bigger size resistors and oversize Mundorf film capacitors need quite a bit time to test fit before final installation. Upgrades parts:
NKK DPST power switch
Mundorf film capacitors
Takman REX75 carbon film resistors' & higher wattage resistors for PSU board
Nichicon capacitors
SS rectifiers use UF4007 instead of stock 1N4007s.
PTFE 9P tube sockets
IEC inlet with ground
a revised power supply board
Eryn
Last edited:
Hi Eryn's,
Your work looks great, as always. Can you say more about the difference in sound with the upgrades?
Your work looks great, as always. Can you say more about the difference in sound with the upgrades?
Victor - any chance Eryn will post here so we can ask questions on his build. Very tasty with those upgrades.
Hi gpdavis2. carlj11,
Please don't mind my late reply, anything you need to ask me about the Pre-1616?
Eryn
Please don't mind my late reply, anything you need to ask me about the Pre-1616?
Eryn
No problem. Life's too short to hurry thru it.
Did you use the SUT internal to your preamp or did you stay with the FET for MC cartridges?
If you did use the SUT (Lundahl LL9226) was hoping you might post a pic of the installation of same.
Thanks.
Did you use the SUT internal to your preamp or did you stay with the FET for MC cartridges?
If you did use the SUT (Lundahl LL9226) was hoping you might post a pic of the installation of same.
Thanks.
I am Using MM 2M Black. If you want to use SUT, please contact Kevin. He is the expert of Lundahl SUT.
Hi gpdavis2,
I'm only using the preamp for now, probably will get the EQ1616 from Victor and try the SUT.
Eryn
