Tag: audio output

Exposes two or four independent output channels from the Apple IIgs Ensoniq sound chip.

The 2soniq was available on backorder and the 4soniq was in stock and backorderable on 2026-07-24. Two-channel output works with most IIgs software; four- or eight-channel use requires software written or modified for those modes and enough powered speakers.

Replaces the CPC 6128's six-pin video socket with a Mini-DIN 9 output wired to the Mega Drive 2 A/V standard.

Both the adapter-only and SCART-bundle pages exposed login-or-register-to-buy paths on 2026-07-27. Installation requires desoldering the original six-pin socket, soldering the adapter, connecting its 5 V wire, and wiring the AL and AR audio pads. The seller explicitly says not to remove the nearby resistors. Confirm pin orientation and display compatibility before applying power.

Adds four 8-bit digital audio channels with stereo output through the Commodore user port.

The Shareware Plus page was last updated on 2025-08-01 and then claimed email ordering, but it exposes no conventional store or current checkout path. HR-061 confirmed that the original maker URL is gone and closed with direction to stop pursuing the unread Mk2 path for now. Availability remains unknown; PCBWay says the author stopped sharing the Mk2 there.

Exposes the Apple IIgs Ensoniq chip's native stereo channels through a rear-panel audio output.

The JCM-1 page showed an in-stock Add to cart path on 2026-07-24. The project reports a harmless shutdown chirp with the ReActiveMicro power supply and says other aftermarket supplies may behave similarly.

Combines two Mockingboards, one ALF music card, and four S.A.M. DAC channels on one Apple II audio card.

The store showed Add to Cart with one base-card option and one optional bar-graph panel in stock on 2026-07-24. MEGA Audio emulates two Mockingboards but does not emulate their SSI-263 speech chips.

Modernizes the Mockingboard A sound card with six voices, a 3.5 mm output, and an input for the Apple II motherboard audio.

Adds hardware MP3 decoding and stereo audio output to a Commodore 64 through an MMC64 or IDE64 V4.1 host.

Protovision says MP3@64 is no longer available or supported. It is intended for the discontinued MMC64 or IDE64 V4.1. Do not force it onto an MMC Replay: the official FAQ warns that the mechanical mismatch can cause a short circuit.

Replaces the C64 RF modulator with composite, optional S-Video, and mono or dual-SID audio connections.

The official store listed RFOUT! at 22 EUR but out of stock on 2026-07-30. It provides a composite socket, a 3.5 mm audio jack, and solder points for an optional S-Video connector; stereo output requires a dual-SID source and the SJ1 setting. Installation requires desoldering the original modulator. Measure the motherboard supply before installation: boards carrying 12 VDC or 9 VAC on pin 1 require that pin to be removed and a separate 5 VDC connection supplied to RFOUT!. Confirm the footprint, voltage, extension-board fit, and case height before soldering.

Discontinued C64C RF-modulator replacement with rear-panel S-Video and 3.5 mm audio jacks.

The original maker site is gone, and a 2020 discussion describes the closed design as dead. An independent review tested an older version on an Assy 250469 Rev. 4 C64C: the first board was faulty, the replacement worked, CRT S-Video improved slightly, flat-panel results were worse, and composite output was unusable in that setup. A later eBay version once claimed C64C and C128D support plus an AEC fix, but no surviving manual or seller page establishes its exact differences or safe C128 installation. Buy used only with a return option and exact revision documentation.