The Studio 1810c is a brilliant, versatile desktop interface offering 18 inputs and 8 outputs. What really sets it apart from standard 4-preamp units is the dedicated rear-panel connectivity—giving you plenty of room to leave hardware gear permanently hooked up without cluttering the front panel.

Key Features:

• Dedicated Rear Direct-to-ADC Line Inputs (5–8): 4 rear ¼-inch TRS line-level inputs that feed directly into the analog-to-digital converters without passing through preamps. Ideal for hooking up stereo keyboards, synthesizers, drum machines, or guitar pedalboards/amp modelers running at line level.
• 4 Front-Panel XMAX Class-A Preamps (1–4): High-headroom combo inputs for microphones, direct guitar/bass tracking, or additional line sources.
• Expandable via ADAT: Easily add 8 more mic or line channels via optical input down the line if your setup grows.
• Dual Independent Headphone Outputs: Two separate front-panel headphone jacks with individual level controls for tracking with another musician.
• DC-Coupled Line Outputs: High-quality outputs capable of sending Control Voltage (CV) signals.
• 24-bit / 192 kHz High-Resolution Audio Conversion
• Built-In DSP Monitoring: Low-latency monitor mixing via UC Surface.

I got this as a stopgap while my mixing desk went off to Thomann's for repair. It's done it's work so time to sell it on. I found the 4 line inputs on the back extremely useful as I could leave my rack and guitar board permanently connected while still leaving the front panel free. The sound is superb, this unit uses the same Preamps as the Presonus mixing desks and they are a bit special.

Power supply is included, you will need to find a USB-C cable. All software and manuals are available on the Presonus website.

I'll post this no later than the next working day after payment is received, you can save on postage if you are able to collect in person, I live in Lamberhurst near Tunbridge Wells.