GPulse-Linear Preamp update.

[GeorgeP]

Hi gents. I just packaged up the Rev-B boards into the new chassis and did some in depth testing.
I hope you all like the look.
You can build it as a kit, purchase the subassemblies as you like. Or...purchase built and tested boards, or the entire plug and play fully tested preamp. Send me a private message if you have any interest in this.
I just fine-tuned the RIAA PHONO Curve...extended response down to 3Hz. Phono preamp is DC coupled. Attached pic is the P-Spice simulation, compared to the original Phase Linear PL-2000. My version is exact match to within 0.2 dB total with more "punch" at 3 to 10Hz, below the 20Hz RIAA Spec for +20 dB. You will feel it!
Attached are some pics for you all to look at. It has the ambience rear channels and the separate tone and turnover frequency controls.
Personally...I love it❣

 

[GeorgeP]

Hi gents. I just packaged up the Rev-B boards into the new chassis and did some in depth testing.
I hope you all like the look.
You can build it as a kit, purchase the subassemblies as you like. Or...purchase built and tested boards, or the entire plug and play fully tested preamp. Send me a private message if you have any interest in this.
I just fine-tuned the RIAA PHONO Curve...extended response down to 3Hz. Phono preamp is DC coupled. Attached pic is the P-Spice simulation, compared to the original Phase Linear PL-2000. My version is exact match to within 0.2 dB total with more "punch" at 3 to 10Hz, below the 20Hz RIAA Spec for +20 dB. You will feel it!
Attached are some pics for you all to look at. It has the ambience rear channels and the separate tone and turnover frequency controls.
Personally...I love it❣ View attachment 86212 View attachment 86207 View attachment 86209 View attachment 86211

So today I connected my AR77XB turntable to my preamp, and Wow...sounds amazing.
I also made some max noise measurements on the phono stage (inputs horted).
Volume control at max, tone controls out, and low Freq EQ off. I have never witnessed a more quieter preamp. The sonic quality is measured as designed, and sounds awesome. The videos...to large to post here, I tried. If anyone wants to see them...email me at abekc@optonline net.