This THS7374 based SNES RGB amplifier based on the circuit designed by Borti4938 provides exceptional RGB video output for SNES console. It fixes problems like the dreaded "vertical bar" that can be seen in dark backgrounds, and provides a sharper picture than the standard S-RGB encoder that Nintendo used in the SNES. If your setup doesn't require dejitter functionality, this mod provides the same excellent output quality than a SNES RGB + Dejitter mod at a lower cost. I hand assemble these boards. This high quality SNES Super Nintendo RGB bypass mod kit includes the brightness correction mod as a standard feature and the appropriate integrated decoupling capacitors for your particular console.
Use this board to save yourself from badly designed & cheap boards which can commonly have issues such as ghosting, artifacts and bad compatibility with scalers.
The kit is sold as DIY and requires soldering skills, please make sure you are confident in installing before purchasing!

Features of the mod:
  • High quality RGB amplifier based on the design by Borti4938.
  • Uses the latest THS7374 amp by Texas Instruments which offers a sharper image over the previous THS7314.
  • S-Video restore for SNES Mini/jr.
  • CS75 or TTL C-sync restore.
  • Low-pass filter disabled by default. It can be enabled clossing JP1
  • Brightness correction mod
  • Includes ghosting correction kit.
  • Decoupling capacitors included for your specific console model.
  • Works with PAL (EU), NTSC-U (USA) & NTSC-J (JP) consoles.

Install instructions:
In the big model you have to free pin 1, 2 and 4 from the MultiAV, which are the outputs of the red, green and blue component, respectively. To do so, simply
  • Remove R15, R16 and R17 from the SNES mainboard
In the SNES2, these pins are unused, i.e., you don't have to do anything here.

If you want to /CSYNC from the modding board you also have to ensure that pin 3 of the MultiAV is also free. In a 1Chip-03 (NTSC only) and in SNES2 models, this is the case by default. In 1Chip-01/02 boards you have to:

  • NTSC systems:
    • Remove R12
    • Optionally also remove R9 - R11 and Q1
  • PAL systems:
    • Remove R28 and D1
Make absolutely sure that there is no signal or voltage on AV pin 3.


Board installation

Solder the modding board into your SNES directly on to of the MultiAV pins.
Make sure that you don't have (electrical) contact between SNES mainboard and your modding board. If you are unsure, simply use isolating tape.
The modding board has to face the long side of the SNES mainboard (opposite of output direction of the MultiAV port) with the solder pads.

Connect the solder pads as follows:
  • R - red image component from S-CPUN pin156
  • G - green image component from S-CPUN pin157
  • B - blue image component from S-CPUN pin158
  • /CS - composite sync from S-CPUN pin151 (SNES_RGBAmp_wCSYNC and SNES_RGBAmp_wCSYNC_SVid only)
  • Y - luma component from S-RGB pin17 (SNES_RGBAmp_wCSYNC_SVid only)
  • C - chroma component from S-RGB pin12 (SNES_RGBAmp_wCSYNC_SVid)

Brightness Issues
This mod board includes the brightness correction already installed. Simply choose the appropriate board for your console.

Ghosting Issues
If your console has ghosting it can be vanished by replacing C11 on the SNES mainboard by a 220nF capacitor included in the kit.