Shure M68FCA Mic Mixer (2 of 3)

The Shure M68FCA is a compact, economical transformer coupled microphone mixer designed for combining multiple mic and auxiliary audio sources in live sound, tape recording, A/V systems, paging and similar applications. It’s part of the M-series of mixers Shure offered as simple, reliable audio tools. The preamps in these sound fantastic and this unit comes with rack ears.

US Buyers: All import duties, taxes, and customs fees are prepaid by me and already included in the shipping cost.

Years of Manufacture:

• Introduced in the 1970s-80s era as a variation of the original M68 design. The “FCA” suffix denotes the version with female XLR input connectors, compared to the M68A with male XLRs. These models are listed in Shure product catalogs from the 1980s and into the early 1990s

Inputs & Controls:

• Four microphone inputs — each switchable between low-impedance (balanced/unbalanced) and high-impedance mode.
• One auxiliary input for tape decks or other line-level sources.
• Individual channel level controls plus a master volume control.

Outputs:

• Microphone-level and auxiliary outputs at selectable impedances to match associated equipment.

Impedance Ranges:

• Low-impedance mic input: ~25–600 Ω (actual ~300 Ω)
• High-impedance mic input: ~10–50 kΩ (actual ~60 kΩ)
• Aux input: ~100 Ω–10 kΩ (actual ~40–70 kΩ)

Power:

• AC mains operation (120 V with internal switchable option for 240 V)