Participation for this group buy is welcome for this line level preamplifier with defeatable tone controls. The stereo preamplifier with power supply will come to about $160.
You will need to attach a transformer, quality knobs and a chassis. Enjoy
You will need to attach a transformer, quality knobs and a chassis. Enjoy
As a fan of preamps with tone controls I am very interested in this. Do you plan to share more details, such as the schematic? Will the buy be for bare board only?
| Member | Number of modules |
| Tomlang | 1 |
| Golden Ear | 1 |
Before I commit to this I need more information. Either a schematic or at least some performance data.
Such as:
1. What are the frequencies of the tone controls and their slopes?
2. What is the overall gain and can the gain be changed by the user?
I have two preamps here that I altered the tone control frequencies and their gain to tailor to my system. That is why I would prefer a blank board and schematic so I could engineer-in these preferences at the beginning of the build.
I guess I was hoping this would be more "open source" and these types of changes could be discussed in this thread.
Such as:
1. What are the frequencies of the tone controls and their slopes?
2. What is the overall gain and can the gain be changed by the user?
I have two preamps here that I altered the tone control frequencies and their gain to tailor to my system. That is why I would prefer a blank board and schematic so I could engineer-in these preferences at the beginning of the build.
I guess I was hoping this would be more "open source" and these types of changes could be discussed in this thread.
Thanks well noted. Here's an idea https://onaudio.herokuapp.com/catalog/preamplifiers
Here are some free resources from the initial 2014 version, assuming this is more suitable for you PCB 211mm*64mm
Attached image of PCB
But do also join us for the group buy if you can, there's good things awaiting you
Some of you suggested I sent you the PCBs as you have the parts.
You can PM me for shipping and paypal details. You don't have to wait for anyone
https://onaudio.herokuapp.com/catalog/pcbs
kind regards
Harrison.
You can PM me for shipping and paypal details. You don't have to wait for anyone
https://onaudio.herokuapp.com/catalog/pcbs
kind regards
Harrison.
Here's a link to the project https://www.pcbway.com/project/shareproject/P1_preamplifier_V_2022_4f7ebf64.html
The tone control response is in the range that it can adjust a bit of the mastering curve and a bit of the rew target curve, that means it will work on everything from headphones to your big woofers
The tone control response is in the range that it can adjust a bit of the mastering curve and a bit of the rew target curve, that means it will work on everything from headphones to your big woofers