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1.Easy to use and quick to get started

2.The process supports design scales of 300 devices or 1000 pads

3.Supports simple circuit simulation

4.For students, teachers, creators

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2.Smooth support for design sizes of over 30,000 devices or 100,000 pads

3.More rigorous design constraints, more standardized processes

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Std edition PreAmp4v3-public

Profile:An Audio Pre-Amplifier that provides active Volume, Bass and Treble Control.

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Published Time: 2022-01-22 09:07:09
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Description

An Audio Pre-Amplifier that provides active Volume, Bass and Treble Control.

Based on the Baxandall design for Logarithmic Volume, Bass and Treble Control.

Complete instructions, test results, detailed description and more can be found at https://www.protoriam.com/preamp4/index.html

design drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 PORT-2PIN-P2.54 AIN1,AOUT1,PWR1 PORT-2PIN-P2.54-GENERIC 3
2 15n C1,C2 C1206 2
3 100n C3,C32 C1206 2
4 22p C4,C12 C1206 2
5 10uF C11,C31 C1206 2
6 1uF C21 C1206 1
7 RED (1.7V) D31 LED1206-R-RD 1
8 SPACER1 P1,P2,P3,P4 SPACER1 4
9 GND POT-GND1,POT-GND2 PORT-1PIN-P2.54 2
10 2k R1,R2,R31 R1206 3
11 10k R3,R14 R1206 2
12 4.7k R4,R11,R12 R1206 3
13 100k R21,R22 R1206 2
14 10k RB1,RT1,RV1 RK0971110D88 3
15 PJ-327A0-SMT AIN3 AUDIO-SMD_PJ-327A0-SMT 1
16 TL972IDR U1 SOIC-8_L5.0-W4.0-P1.27-LS6.0-BL 1

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