For sale is my RJM Emerald phono stage (https://phonoclone.com/diy-pho7.html) -- $300 OBO
At $300 I'll pay shipping and PP fees.
I have built another Emerald with some different components so I am selling this one.
This is a wonderful sounding preamp. This Emerald replaced a Schiit Mani 2 in my system and it wasn't even a contest. This Emerald was compared against the internal phono stages on a Rogue Sphinx II and III and was more musical and quiet. I also compared this against a Simaudio P5.3, I preferred the Emerald my friend preferred his P5.3.
I build it per the RJM BOM but with a couple of modifications:
Power supply
Umbilical is approximately 12inch but it can be easily lengthened because of the screw terminals in the PowerCon connectors.
Cases are from China off Ebay.
Thanks for looking!




At $300 I'll pay shipping and PP fees.
I have built another Emerald with some different components so I am selling this one.
This is a wonderful sounding preamp. This Emerald replaced a Schiit Mani 2 in my system and it wasn't even a contest. This Emerald was compared against the internal phono stages on a Rogue Sphinx II and III and was more musical and quiet. I also compared this against a Simaudio P5.3, I preferred the Emerald my friend preferred his P5.3.
I build it per the RJM BOM but with a couple of modifications:
Power supply
- 30VA R-core transformer
- LED power switch
- DC converter for power switch
- CRC DC filter
- Neutrik PowerCon for umbilical
- Neutrik PowerCon for umbilical
- Neutrik RCA jacks
- C3 - 1.8uF Clarity Cap SA
- RJM Switch Board for cartridge loading
- (1-4 all open) - 47 kohms or whatever the phono stage input impedance is.
-------
close 1 - 1k
close 2 - 221 ohms
close 3 - 100 ohms
close 2 and 3 - 68 ohms
close 4 - 22.1 ohms
-------
(5-6 both open) - 0 pF (+ cable)
-------
close 5 - 100 pF (+ cable)
close both 5 and 6 - 200 pF (+ cable)
- (1-4 all open) - 47 kohms or whatever the phono stage input impedance is.
- Vampire one piece hard brass ground post
- Installed are OP27 opamps
- Can be rolled with many different single channel opamps
Umbilical is approximately 12inch but it can be easily lengthened because of the screw terminals in the PowerCon connectors.
Cases are from China off Ebay.
Thanks for looking!




Too bad I only just saw it. Have been in SF for 2 weeks but heading back to Canada (Vancouver area) in 4 days. More than what I wanted to spend but I bet it sounds good.