I've added a new contender: the Colorfly C4 Pro.
I'm very disappointed, because I thought that a thread like this would have had a little more success, even if it was a marketing reply from a sponsor or something like that. This is one of those opportunities when I would like a sponsor to expose the advantages of his product over the others.
From what I know and I've read, each one has some advantages and disavantages. I'm going to write all the information here as personal notes to help me making my decision.
1, iPod Classic 160Gb + Fostex HP-P1
Pros:
- Compatible with a huge number of docks and accesories.
- High quality DAC and amp in the Fostex unit, that can drive almost all headphones.
- 160Gb of storage, biggest of the three.
- Possibility of Rockbox port.
- Great UI and user experience.
- Both Fostex and Apple are very consolidated brands in their respective business areas.
Cons:
- Huge size of the combo.
- Not compatible with FLAC if the stock firmware is used.
- Old model range.
- No memory card slot.
- No replaceable battery.
2, HifiMan HM-801 + GAME amp modular card
Pros:
- Powerful amplifier.
- Compatibility with 24bit/96KHz.
- Replaceable battery.
- Modular design with upgradeable parts.
- Memory card slot.
Cons:
- Mixed reviews.
- Exceptionally poor measurements with lots of distortion that some report as musical, but others hate the way it sounds.
- Short battery life.
- Somewhat hard to get in Europe, except in one british online shop.
- Ugly as the backside of a fridge.
- Poor UI and user experience.
- Black and gold, not quite my style.
- The most expensive of the three, despite having the poorest build quality and selling package.
3, ColorFly C4 32Gb
Pros:
- Utterly beatiful with real wood and metal front case in brass.
- Really eye-catching desing of the front panel.
- Analog ALPS potentiometer with no imbalance even at dead silent listening levels.
- Very good reviews.
- Very impressive measurements. The jitter is unmeasureable.
- Very nice package, with real leather case.
- Two headphone outputs: 1/4" and 1/8".
- Powerful amplifier.
- Compatibility with 24bit/192 files.
- Seems to have regular firmware updates.
- Direct button for upsampling.
- The cheapest of the three.
- The smallest of the three, though it's quite big indeed.
Cons:
- Very little information in the web about it. Don't know if it's possible to add a memory card.
- Hard to get in Europe, except in the british distributor.
- Poor battery life.
- Poor UI and user experience.
- No custom EQ.