@iFi audio Thanks for the breakdown! I have no doubts about the quality of the DAC portion of your product as opposed to a random cheap piece of gear from Amazon!@zberkowitz I am sure that the 1Mii B06Pro serves its purpose which is receiving BT signal. You may as well find a BT receiver for £15 on Amazon, but then again we need to ask ourselves what do we aim for. Reception of BT signal or reception of super high-quality BT signal.
The Zen Blue and 1Mii B06Pro are two dramatically different products. The only similarity they have is the fact that their main function is BT reception.
The Zen Blue
QCC 5100 Series -Newest generation of QCC chips.
Plus, the BT chip is only responsible for signal reception. All the processing (i.e. cleaning, de-jittering, hum reduction, re-clocking technologies) is done
a) outside of the BT chip
b) in the analogue domain.
That is why is also has a DAC chip installed. The ZEN Blue has separate digital and analogue stages. To feed the analogue stage, the processed digital signal is routed from the QCC5100 to a specialised DAC chip from ESS Technology’s Sabre family to convert the signal from digital to analogue.
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It incorporates a range of high-quality circuit components, carefully selected for their performance in an audio context, including professional-grade balanced line drivers, C0G capacitors from TDK and a precision low-noise power supply IC from Texas Instruments.
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QCC3005 - An older generation design.
System-on-Chip - All the decoding, amplification and DAC conversion is done inside the chip. There is no cleaning, de-jittering, hum reduction, re-clocking technologies.
The Zen Blue
The ZEN Blue supports Bluetooth® in all current and future formats. Every possible source device is covered, at the highest resolution its Bluetooth audio specification will allow. All the latest 24-bit-capable Bluetooth audio formats are supported.
AAC, SBC, aptX, aptX HD, aptX Adaptive, aptX LL, LDAC, HWA Codec
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Goes up to apt-X and apt-X Low Latency. It does not do high-resolution 24 bit audio.
The Zen Blue
Balanced - the ZEN Blue’s analogue output stage is a balanced design. The balanced design means less interference and cross talk. It has RCA and balanced outputs at HiFi standard level; 2V SE and 4V BAL and thus is compatible with both HiFi and Pro systems.
It is not balanced.
Zen Blue - You can insert clean, efficient and effective 5V power supply.
1Mii B06Pro -only USB powered.
But the interest of this thread and the review are more related to the digital output. Your product supports LDAC which I understand to be the superior BT codec which is great. However, I'd guess that in my particular listening setup I'd be hard pressed to tell the difference between it and the aptX HD codec for most material. If using the same codec, what's the difference between the S/PDIF output on your product and that of the competition?