headphonesExcellent HD650/HD6XX synergyexpand_more0 mentions
Multiple owners report the Signature stack sounds exceptional with the HD650 and HD6XX, delivering deep bass, smooth treble, and impressive soundstage. One user called it a stack that makes you 'set for life' with the 650.
Strongly positive
boltStrong power for high-impedance headphonesexpand_more0 mentions
Commenters note the CAN provides ample power for high-impedance cans, with one saying the amp actually outperformed the more powerful-on-paper Drop THX 789 in real listening, and another noting it easily overpowers lower-impedance headphones.
Widely praised
buildImproved build qualityexpand_more0 mentions
The Signature version has smoother, non-rattling buttons and a nicer dark blue and black finish compared to the standard CAN. One buyer called it a clear build upgrade worth the price for that alone.
Widely praised
powerBundled power supply includedexpand_more0 mentions
The Signature comes with the iFiPowerX power supply included, which one buyer noted retails separately for around £99, adding value to the bundle even if the sonic difference is minor.
Widely praised
tuneConvenient one-button EQ tuningexpand_more0 mentions
The dedicated 6XX mode button lets users get a tuned sound without manually applying EQ, which some see as a genuine convenience despite the added cost.
Generally positive
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