Thank you for viewing from among many items. This unit incorporates analog overdrive and chorus, the originals of the OS-2 and CE-2, as well as a compressor and noise suppressor. Only the delay is digital. It's an old piece of equipment, but it's a multi-effects unit that looks like a collection of BOSS compact pedals. All terminals have been connected and the operation of all knobs has been confirmed. Maintenance has also been performed, so there is no scratchiness in the knobs. However, please understand that this model was released in 1989, over 35 years ago, so there is some wear and tear on the unit. No comments are needed, and you can buy it immediately. When shipping, I will protect it with cushioning material and ship it within 24 hours. It can also be shipped together with other items I have for sale, so please consider them as well. Overdrive (OS-2) → Analog Chorus (CE-2) → Analog Compressor → Analog Noise Suppressor → Analog Delay → Digital #Stratocaster #Telecaster #LesPaul #Jazzmaster #Jaguar #ElectricGuitar