This kit is sold by several sellers, but I see one big problem there. Some send 3 potentiometers with a linear curve, others with three logarithmic ones, but both are wrong because they require linear tone control, logarithmic for volume control, am I right? Can you please confirm this somehow? Thank´ s.
Hi Dec, Its based on a NAD3020 pre amplifier circuit from the 70/80's. Yes the circuit is new to me, bought from a seller on Aliexpress.com www.aliexpress.com/item/1005004825779255.html
NAD 3020 The NAD 3020 is a stereo integrated amplifier by NAD Electronics, considered to be one of the most important components in the history of high fidelity audio. Launched in 1978, this highly affordable product delivered a good quality sound, which acquired a reputation as an audiophile amplifier of exceptional value. By 1998, the NAD 3020 had become the most well known and best-selling audio amplifier in history. more on wilkipedia en.wikipedia.org/wiki/NAD_3020
In another version, instead of 3k9+220R, there is a variable resistor next to the voltage regulators LM-s.
Wow - lots of tabs in the browser! Thanks for the review!
Very interesting stuff Elecifun. Thanks for posting this.
No problem, Ox. Cheers for the feedback.
This kit is sold by several sellers, but I see one big problem there. Some send 3 potentiometers with a linear curve, others with three logarithmic ones, but both are wrong because they require linear tone control, logarithmic for volume control, am I right? Can you please confirm this somehow? Thank´ s.
Sweep from 2Hz to 200Khz?
NAD 3020 had single line potencjometr for balance ...
@@szyszka8303 you could add a balance oot across the output.
Hi Sir ! This is a new pre-amp??
Hi Dec, Its based on a NAD3020 pre amplifier circuit from the 70/80's. Yes the circuit is new to me, bought from a seller on Aliexpress.com
www.aliexpress.com/item/1005004825779255.html
NAD 3020
The NAD 3020 is a stereo integrated amplifier by NAD Electronics, considered to be one of the most important components in the history of high fidelity audio. Launched in 1978, this highly affordable product delivered a good quality sound, which acquired a reputation as an audiophile amplifier of exceptional value. By 1998, the NAD 3020 had become the most well known and best-selling audio amplifier in history.
more on wilkipedia
en.wikipedia.org/wiki/NAD_3020