Tag: stereo audio

Current composite and S-Video cable options for compatible Commodore computers, with a five-pin composite branch that also serves selected Atari systems.

The two five-pin products exposed Add to cart controls, while the eight-pin product exposed current priced options on 2026-07-30. The five-pin cable and adapter carry composite video and two audio connectors; those connectors do not create an independent stereo source in a stock mono computer. The eight-pin S-Video branch requires a host that supplies separate luma and chroma. Its stereo option requires a compatible second audio source on the designated extra pin. Match the connector, resistor, audio wiring, display input, and regional video standard before ordering.

Adds an internal AY or Yamaha sound generator and stereo output to a ZX Spectrum through a CPU adapter.

Lotharek marks the interface discontinued. The AY chip and audio connector are not included. Plug-in installation assumes a socketed CPU; otherwise safe CPU desoldering and socket work are required. Preserve pin-1 orientation at the CPU adapter, ribbon cable, and sound-chip board, then provide the documented stereo and ULA-audio wiring.

Host-specific passive A/V adapters for the VIC-20, C128 family, Plus/4, and Ultimate64 replacement mainboards.

Commodore4ever exposed active Add to cart controls for all four variants on 2026-07-30. The Ultimate64 board uses a different A/V pinout from an original C64; do not use that adapter on a stock C64 or assume compatibility with the newer Commodore 64 Ultimate. The C128 variant handles the 40-column analog output, not the separate 80-column RGBI port.

Replaces a C64 RF modulator with FPGA-generated 1080p HDMI video and digitized stereo audio while retaining analog video.

Authorized seller Retro-Updates listed hardware version 0.2 at EUR 109.00 on 2026-07-27. Confirm the exact revision and production batch before ordering: the manual documents incorrect chroma resistors in the first version 0.2 production batch, an ineffective PLL-adjustment jumper on batches 1 and 2, and a transmitter issue that prevents HDMI audio on a small minority of displays.

Automatically selects among five, eight, or sixteen powered SCART sources, with expandable Hydra2 variants providing as many as 24 inputs.

The Hydra2, W-Hydra2, W-Hydra, both Mini Hydra cases, and HEADS pages exposed login-or-register-to-buy paths on 2026-07-27. Mini Hydra cannot use HEADS. Hydra2 and W-Hydra2 can reach 24 inputs; W-Hydra can reach 24 inputs but has one output. Use simple correctly attenuated 75-ohm source cables. Do not feed TTL-level sync into an analog input, and never connect or disconnect SCART while the switcher or source is powered because the seller warns that hot-plugging can damage the video-switch IC. Power hardware is separate: most Hydra2 variants accept 5 V Micro-USB, selected variants also accept the separately sold 9 V PWR4, and the older W-Hydra page specifies 5 V Micro-USB.

Adds a four-channel discrete DAC beneath the PIA chip for higher-quality Atari 8-bit sample and module playback.

The product exposed a login-or-register-to-buy path on 2026-07-28. The seller's demonstration shows an Atari 800XL, which is the only exact model established by human review. The published address table assigns both LS138 pin 9 and pin 10 to $D600, so verify the desired address against reliable board documentation rather than relying on that table. A non-socketed PIA must be desoldered and socketed.

Current passive adapters that expose S-Video, composite video, and stereo audio connections from a SCART path.

Lotharek exposed a login-or-register-to-buy path on 2026-07-27, and AMI64 exposed an Add to Cart path on 2026-07-30. The AMI64 adapter has an input/output switch but permits S-Video only in the input direction. Neither passive adapter converts signal formats or scan rates. Verify direction, wiring, connector gender, and signal support against both connected devices before use.

Host-specific C64 and C128 breakouts with open eight-pin designs plus an assembled five-pin option for early C64 boards.

Retro Rewind listed the assembled eight-pin C64 version, while Commodore4ever listed both eight-pin and early five-pin C64 versions on 2026-07-30. The open eight-pin C64 and dedicated C128 variants remain buildable from board, BOM, and case files. The standard C64 board physically blocks the IEC port on a C128, so use the dedicated C128 layout there. Optional two-channel output requires a second SID or similar source wired to pin 7; otherwise both output channels carry the computer's mono audio.

Lets Atari 8-bit computers use an external PS/2 keyboard through a POKEY-based internal adapter.

The Brewing Academy versions were sold out on 2026-07-24, while MyTek publishes schematics, board files, firmware, parts information, and bare-PCB order links. A 600XL or 800XL uses the TK-II-PB-R installation. Expect soldering and possible case modification; an unsocketed POKEY must be desoldered and fitted with a 40-pin socket. The Stereo version needs a second genuine POKEY and external amplification for its line-level output.