Game Gear Sound board

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

I have created a new sound board to fit the new Game Gear mainboard. This sound board is specifically designed to be compatible with the new mainboard, but it can also be used with the original SEGA Game Gear. One exciting feature of this sound board is the option to enable stereo speaker output, enhancing the audio experience.

The sound board I have developed utilizes the STMicroelectronics TDA2822 amplifier chip, which is the same chip used in the original SEGA sound board. The TDA2822 is a dual power amplifier, the circuit is specifically designed to amplify both speaker and headphone output. By incorporating this reliable and proven amplifier chip, the sound board ensures high-quality audio amplification for both speakers and headphones, delivering an enhanced gaming experience.


In case you like to make your own board, you can download the gerber, BOM and PNP files here. Keep in mind the project has a Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) license.


Designator Value Footprint LCSC Part
C1 100uF CASE_B2 C79109
C2 100uF CASE_B2 C79109
C3 220uF CASE_B2 C79111
C4 100nF 1206 C97946
C5 47uF CASE_B2 C147768
C6 100nF 1206 C97946
C7 47uF CASE_B2 C147768
C8 100nF 1206 C97946
CN1 292161-6 Plugin,P=2mm C499123
CN2 292161-2 Plugin,P=2mm C86484
CN3 292161-2 Plugin,P=2mm C86484
IC1 TDA2822D SOP8 C668663
J1 PJ-307A PJ-307A C2939174
L1 1000R@100MHz 1206 C142050
L2 1000R@100MHz 1206 C142050
L3 1000R@100MHz 1206 C142050
LF1 1K SO6
R1 56K 1206 C137251
R2 56K 1206 C137251
R3 4R7 1206 C859161
R4 4R7 1206 C859161
R5 100R 1206 C137392
R6 100R 1206 C137392
SW1 SSSS811101 SMD C109335
VR1 A103


You can also replace L1, L2, L3 with the original part SEGA used, this is a CMC from Taiyo Yuden with part number CM04RC02. However, this part is obsolete and therefor replaced by a modern one.