Heritage Audio MCM-8 MKII 500 Series Rack/Summing Mixer with Power Supply

Heritage Audio MCM-8 MKII 500 Series Rack/Summing Mixer with Power Supply

8-Slot 500 Series Enclosure with 10-Channel Summing Mixer

The Heritage Audio MCM-8 MKII is a premium 500 Series chassis and summing mixer designed for professional studio environments. Building on the success of the original MCM-8, the MKII version incorporates user feedback for improved workflow, lower noise, and added flexibility.

This updated model features a dedicated 500 Series bypass button per channel, allowing for quick A/B comparisons or use of the mixer even with empty slots. A new quasi-balanced voltage summing topology significantly reduces noise, bringing the noise floor near theoretical minimums—ideal for clean, high-headroom mixes.

Equipped with Heritage Audio’s proprietary On Slot Technology (OST), each of the 8 module slots is individually regulated and isolated, ensuring optimal performance regardless of the combination of modules installed. This approach minimizes power-related interference—especially critical when mixing brands or designs.

Key Features:

• 8-slot 500 Series enclosure with 10-channel transformer-based summing mixer
• On Slot Technology (OST): Independent linear regulation for each slot
• Per-channel controls: Dual-concentric Pan and Fader, ON switch, and 500 Series bypass
• Expanded summing features: Passive voltage summing architecture with a Class A, transformer-based output stage
• Rear stereo input for daisy-chaining or integrating external sources
• Stereo master section with analog VU meters and master fader
• Multiple connectivity options: Gold-plated XLR and DB25 I/O (Tascam format)
• Heavy-duty RAF Blue Gray steel chassis with aluminum front panel

Technical Specs:

• Channel Input Impedance: 20 kΩ
• Max Input Level: > +27 dBu
• Max Output Level: > +26 dBu into 600 Ω
• Frequency Response: ±0.5 dB from 20 Hz – 20 kHz
• THD + N: ≤ 0.07% (50 Hz – 10 kHz at +20 dBu, 80 kHz bandwidth)
• Self-Noise: -90 dBu
• OST Power Handling: 400 mA max per slot, 1.6 A per rail (non-continuous)
• Phantom Power Available: 140 mA total
• Operating Voltage: 100–240 VAC

Condition: Used. Shows typical signs of cosmetic wear but is fully functional and performs as intended. Includes power supply.

• At Tone House, we're not just sellers, we're passionate musicians, gear aficionados, and seasoned professionals dedicated to the craft of making music. We take pride in our curated music collection. We love giving these vintage and rare pieces new life through maintenance and upkeep. Our goal is for these units to be at their optimal performance before going to their new homes.  Every item you acquire from us undergoes a meticulous inspection process conducted by our team of enthusiasts, studio engineers, and live performers. With full-time technicians on staff, rest assured that each piece is thoroughly examined and tested before being professionally packed.

All orders placed by 2 pm are processed the same day. This ensures that your gear is swiftly prepared for shipment, guaranteeing prompt delivery in the condition promised. Once your order is in transit, automatic tracking information is provided, allowing you to monitor its journey from our shop to your doorstep with ease.

The units/items you see in our pictures are precisely what you'll receive. Have questions? Feel free to ask before making a purchase. Additionally, we offer custom modifications, within reason, to many of the guitars and products we sell, ensuring they perfectly suit your unique requirements.

Our dedication to your satisfaction doesn't end with the purchase. We value your feedback and strive for excellence in every transaction. If, for any reason, you're not completely satisfied, please reach out to us before leaving feedback. Your happiness is our priority, and we're here to ensure your musical journey is nothing short of exceptional.

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Please note that additional shipping charges may apply to buyers in Hawaii, Alaska, Puerto Rico, and the Virgin Islands. Feel free to contact us for shipping rates before making your purchase.

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AW