Like the title says. I've been looking at the reviews here, and so far, performance and feature-wise, the FiiO BTR7 looks like what I want, and is near the top of the range I'd like to spend.
I usually use Shure SRH1440, though sometimes some more sensitive in-ear monitors.
Usual use will be Tidal, and usually over bluetooth, and usually driving the SRH1440s (price: ~$400CDN ~4 years ago).
Since there are so many devices available in the space, I'm wondering - is there another that's better for the price? I don't want to buy the thing and then a week later find something and be like: dammit! That's so much better! Why'd I buy this dang thing?!
Needs to have:
- >8h battery life
- >80mW clean output
- ability to drive down to 40 ohms
- >= -100dB THD+n @ 2.2V
- Bluetooth 5, with latest lossless audio codecs support
- MQA
- 24 bit / 192kHz
Like to have:
- 16h battery life (so I can 64-14% it and increase the total charge able to be transferred to/from it by five times (vs 100-0) before degradation inevitably rears its hideous face and frightens the battery to death (and by extension the device I like so much, because some genius decided to use single-attach-zero-detach clips for the chassis)
- DSD support
- ability to drive down to 16 ohms
- customizable filters with one of them rolling off to at least 12-20dB by 1/2 sample rate
- balanced output
- >= -106dB THD+n
Sometimes the DAC will be connected to the phone or PC with USB, and its output, not to headphones, but the input of a power-amp. The fronts of my Denon AVR-X3700H.
Note: there isn't an actual "power-amp" input on the rear panel of Denon's 3700H (or any of their recent receivers AFAIK), but, if a set of speakers is enabled (meaning the power amps of those channels are on), you can connect a pre-out/HP out of an external source to the Denon's multi channel preamp output on the back (as counterintuitive it might seem), and the signal will reach the receiver's power amplifier section! (For Denon owners interested, this should work back at least two generations prior to last (eg 3500) and (I believe) on every model down to 2700H [and equivalents]).
Why do this? Most (if not all) AVRs use very affordable multi-channel volume controls which are 8 channel op-amps. They're very... affordable. Datasheets I've seen have always given THD+n specs very close to or exactly -100dB.
You might say: "well that's not great, but it's not bad either!"
And I'd say: Add some noise from gain mis-match, slap on (or not) some less than ideal capacitors, and then power it from the same rail as the HDMI and display boards!
I'm not saying that's how Denon's receivers implement their volume ICs (from my understanding of their understanding, they're smarter than that...), but even perfectly implemented they're not transparent in the chain of a good source on a good DAC to a good amp driving good speakers in a good room to a person with good ears who knows what to listen for (long chain lol)
So yeah, basically, is there something better for about the same price? Or something as good for less?
Review of FiiO BTR7
I usually use Shure SRH1440, though sometimes some more sensitive in-ear monitors.
Usual use will be Tidal, and usually over bluetooth, and usually driving the SRH1440s (price: ~$400CDN ~4 years ago).
Since there are so many devices available in the space, I'm wondering - is there another that's better for the price? I don't want to buy the thing and then a week later find something and be like: dammit! That's so much better! Why'd I buy this dang thing?!
Needs to have:
- >8h battery life
- >80mW clean output
- ability to drive down to 40 ohms
- >= -100dB THD+n @ 2.2V
- Bluetooth 5, with latest lossless audio codecs support
- MQA
- 24 bit / 192kHz
Like to have:
- 16h battery life (so I can 64-14% it and increase the total charge able to be transferred to/from it by five times (vs 100-0) before degradation inevitably rears its hideous face and frightens the battery to death (and by extension the device I like so much, because some genius decided to use single-attach-zero-detach clips for the chassis)
- DSD support
- ability to drive down to 16 ohms
- customizable filters with one of them rolling off to at least 12-20dB by 1/2 sample rate
- balanced output
- >= -106dB THD+n
Sometimes the DAC will be connected to the phone or PC with USB, and its output, not to headphones, but the input of a power-amp. The fronts of my Denon AVR-X3700H.
Note: there isn't an actual "power-amp" input on the rear panel of Denon's 3700H (or any of their recent receivers AFAIK), but, if a set of speakers is enabled (meaning the power amps of those channels are on), you can connect a pre-out/HP out of an external source to the Denon's multi channel preamp output on the back (as counterintuitive it might seem), and the signal will reach the receiver's power amplifier section! (For Denon owners interested, this should work back at least two generations prior to last (eg 3500) and (I believe) on every model down to 2700H [and equivalents]).
Why do this? Most (if not all) AVRs use very affordable multi-channel volume controls which are 8 channel op-amps. They're very... affordable. Datasheets I've seen have always given THD+n specs very close to or exactly -100dB.
You might say: "well that's not great, but it's not bad either!"
And I'd say: Add some noise from gain mis-match, slap on (or not) some less than ideal capacitors, and then power it from the same rail as the HDMI and display boards!
I'm not saying that's how Denon's receivers implement their volume ICs (from my understanding of their understanding, they're smarter than that...), but even perfectly implemented they're not transparent in the chain of a good source on a good DAC to a good amp driving good speakers in a good room to a person with good ears who knows what to listen for (long chain lol)
So yeah, basically, is there something better for about the same price? Or something as good for less?
Review of FiiO BTR7
FiiO BTR7 Review (Portable DAC & HP Amp)
This is a review and detailed measurements of the FiiO BTR7 portable battery operated USB & Bluetooth DAC and THX balanced headphone amplifier. It is on kind loan from a member and costs US $199.99. A bright, high contrast IPS LCD greets you with lovely/star-trek style fonts which I liked very...
www.audiosciencereview.com