Sound Blaster 1.5 Clone (8‑bit ISA) with C/MS Game Blaster Chips
This is a Sound Blaster 1.5–compatible ISA sound card featuring original C/MS (SAA1099) Game Blaster chips.
It offers full compatibility with the original Creative Sound Blaster 1.0 and 1.5 while using modern surface‑mounted components for improved reliability and reduced noise. The OPL2 and C/MS chips remain original to preserve authentic sound.

* AdLib / OPL2 FM synthesis
* Sound Blaster digital sampled audio
* MIDI support via joystick‑to‑MIDI adapter
* Dual C/MS (SAA1099) Game Blaster chips (true stereo)
* Amplified mode and line‑level mode
* Volume control for amplified output
* Microphone input with selectable bias (tip or ring)
* Plastic expansion slot bracket included

A metal bracket is available as a separate listing on eBay if a sturdier option is preferred.

* Line‑level mode for use with powered speakers or external amplifiers
* Amplified mode for passive headphones or speakers, with onboard volume control

Microphone Support
The onboard microphone input supports both powered and passive microphones. Bias can be configured via an onboard switch as labeled.
Compatibility & Testing

Fits any PC with an ISA slot
8‑bit ISA card (also works in 16‑bit ISA slots)
Each board is tested prior to shipping on real hardware

This card provides classic PC audio for DOS games and applications, including support for OPL2, Sound Blaster digital audio, and C/MS/Game Blaster sound where supported.
If you have any questions, please feel free to contact me through eBay Messages.