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There is also a System port in which you plug in an umbilical cable that also connects to the Network CD Player: the other main bit of this mini system. The rear offers a single set of analogue inputs, a USB port (Type B), a port for a possible subwoofer, ‘proper’ speaker terminals plus the built in power cable. Apart from the power button and tone controls (very 70s), it also offers a Pure Direct button to bypass these tone controls in sonic terms, a volume knob, a headphone port for the built in headphone amp plus PCM and DSD lights for digital play (although, they come with a twist, which I’ll address in a second). The 70W amp, on its own, has enough facilities to be usable as a single entity. As you will see, the Yamaha system is packed with facilities, is designed to work together as a single unit, has a nicely finished and matched look that is slightly nostalgic in its fascia design and is sized to fit into most small spaces. Well, the reason has got a lot to do with convenience, a larger feature count and integration. You could buy yourself a perfectly respectable Cambridge Topaz amp and CD player for under £400, after all. What is the point of a mini system? After all, I’m here to talk about an amp with another box of digital sources that costs around £750 in total. Part of the larger Yamaha MCRN870D mini system, Paul Rigby unplugs the AU670 amplifier and CDN670D Network CD Player and reviews them as separate items
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