Vintage Street Electronics Echo PC+ Sound / Speech Synthesis Card
​Item Identification & Specifications
​Brand / Manufacturer: Street Electronics Corp. (Dated 1987)
​Model Name: Echo PC+ (ISA Bus Speech Synthesizer / Audio Card)
​Key Integrated Circuits:
​ECHO-1 SEC 01019 (CSS41005N2 LU 8822 PHILIPPINES)
​AMPAL16L8APC (PCPLUS)
​NE558N Quad Timer
​TL084CN JFET Operational Amplifier
​Multiple logic and buffer chips (74LS373N, 74LS02N, 74LS125APC, 74LS175N)
​Onboard Connectors: DB-25 parallel / game port interface, 3.5mm speaker output jack, and golden ISA edge connector​Condition: For parts or not working (Untested)​Description:
Up for sale is a rare vintage Street Electronics Echo PC+ ISA expansion card from 1987. Designed for early IBM compatible retro PCs, this board features custom speech/audio synthesis circuitry anchored by the custom ECHO-1 processor and TI/National Semiconductor support chips.​Collection & Storage Background:
This item is pulled from a massive, long-term collection of vintage computing and test gear. It was fully functional when originally pulled, but has been sitting in storage for years inside a temperature-controlled, dry storage facility.
​Cosmetic & Cleaning Note:
To keep the hardware completely original, we do not perform heavy chemical or ultrasonic cleaning. You may notice minor age-related dust, light patina, or storage wear. We give items a light wipe-down and leave the rest untouched so you can clean or restore it to your exact standards.
​Includes: 1x Street Electronics Echo PC+ ISA Card
​Shipping: Carefully packed in anti-static shielding and shipped with tracking. Sold strictly as-is, untested.