Audiophilepure

In balanced high gain mode, both devices do not have enough headroom to drive the Diana DZ comfortably without it starting to sound shouty and thin.

It was only when I plugged the Mystic XP1 into its accompanying AC power brick and turned on its M-Power mode did the DZ suddenly delivered the necessary weight and headroom to sound like it was being driven quite well.

M-Power provides up to 1.5W of power at 50Ω which is closer to where the DZ should be but bear in mind the Mystic XP1 becomes a desktop amplifier in the process.

If you need portable power without a power cable the best I can suggest is the Cayin C9 which will give you 1.6W into a 50Ω going balanced plus a few tonal tweaks to fine-tune the Diana DZ which is a plus in my book.

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