Final testring and confirmation of MOD's THD-N at 1kHz

A project log for Audio - Phono preamplifier boost

Clean hack of the otherwise very solid ART DJ-Pre II phono preamp with the aim of improving the existing design and enhancing its features

jovanJovan 06/05/2023 at 21:450 Comments

Final results of my Art DJPre-II MOD. As input I have used my handcrafted ultra low-distortion oscillator with almost immeasurable levels below 0.0004% THD+N, which had to be attenuated by -40dB.

ART-DJPREII-mod2-THD_ for_1kHz(-40dB_Input_WBOscilator-LM4562-0.0004prcTHD).bmp

I hope this modification project will demonstrate that every product can and should be scalable and open to improvements, and that the world would be a much better place with less pollution if every product were made with a little more care and fewer shortcuts, aiming not only for slightly higher profits, but also for greater overall quality.

Best regards,

Dr Jovan Ivković