DIGITAL SOURCE COMPONENTS
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go to: Contents | Feature | On The Horizon | DACs | CD Players | Music Servers | Integrated Amps with DACs | Portable | Our Top Picks<br />
Your Guide to Computer and Portable Digital<br />
Glossary of Terms<br />
Bit-rate: The number of bits of digital information<br />
contained in one second of a digital audio file.<br />
DAC: Digital-to-analog converter.<br />
GB: Gigabyte.<br />
High-Resolution Audio: Digital audio file with a<br />
sampling frequency and word length greater than<br />
44.1kHz/16-bit (CD quality).<br />
kbps: Kilobits per second.<br />
MB: Megabyte.<br />
Mbps: Megabits per second (there are 8 bits in<br />
one byte).<br />
NAS: Network attached storage; generally an<br />
external hard drive connected to a network via<br />
Ethernet.<br />
Sample rate: The number of times (frequency)<br />
an analog waveform is sampled each second<br />
expressed in kilohertz (kHz), e.g. 44.1kHz, 96kHz,<br />
192kHz.<br />
AK120 II ($1699), each of which offers various<br />
storage and sonic capabilities. There are also<br />
smartphones capable of high-res music playback,<br />
such as the HTC One (M8) Harman/Kardon<br />
Edition (see sidebar), which consolidate all<br />
of your portable devices into one sleek package.<br />
For those who have large CD collections and<br />
simply want the ability to carry all that music<br />
with them, the Apple iPod Classic is still the<br />
best option. For $249, you get 160GB storage<br />
capacity, a user-friendly interface, and 36<br />
hours of audio playback—far longer than most<br />
other portable audio devices. The downside to<br />
the iPod is that it is limited to 44.1kHz/16-bit<br />
PCM files. However, if you aren’t concerned<br />
about high-res audio, it will be the fastest and<br />
easiest way to take your music collection with<br />
you.<br />
If you want the ability to play high-res audio<br />
on the go, you will need a device that can<br />
play those types of digital audio files. Before<br />
you purchase a portable music device, make<br />
sure that it’s capable of at least 192kHz/24-<br />
bit audio playback, and that it has adequate<br />
storage capabilities for your needs. Remember,<br />
an uncompressed four-minute song at<br />
96kHz/24-bit quality will consume about<br />
140MB, which means that a portable audio<br />
device with 128GB of storage space can hold<br />
about 900 four-minute songs. Most portable<br />
devices will have enough internal storage<br />
capability to keep you rockin’ for many hours,<br />
if not days, but some require a microSD card<br />
(a small flash-based storage card) to expand<br />
their internal storage to 128GB.<br />
A great starter digital player is the FiiO X3.<br />
At $200, the X3 can play any high-res file,<br />
including DSD up to DSD64 (64 times the<br />
sample rate of a CD). Though limited to 8GB of<br />
internal memory, the X3 is capable of 128GB of<br />
storage capacity with an additional microSD<br />
card. For $399, Neil Young’s new Pono Music<br />
Player is compatible with all PCM files up to<br />
192kHz/24-bit, has 64GB of internal memory<br />
and an included 64GB microSD card for a total<br />
of 128GB of storage. Designed in conjunction<br />
with Ayre, manufacturer of high-end audio<br />
components, the Pono Music Player offers a<br />
great mix of sound quality, storage capability,<br />
and cool factor.<br />
If you’re searching for the ultimate in port-<br />
Streaming Services<br />
Spotify: $9.99/mo<br />
TOP RECOMMENDATION<br />
• 30-day free trial period.<br />
• Download and save music for use at any time,<br />
including syncing with iPods and portable music<br />
devices.<br />
• Audio quality is 320kbps for Premium subscribers<br />
in Ogg Vorbis format (don’t be fooled by<br />
the high-definition claims; it’s still compressed<br />
music).<br />
• Great user interface.<br />
• Mobile versions for most devices.<br />
• Great discovery feature based on similar interests.<br />
• Browsing based on 25 different main “moods,”<br />
including Dinner, Sleep, Jazz & Blues, Romance,<br />
Focus, Party, Classical, and more.<br />
• Sub-moods provide tailored playlists such as<br />
“Mixed Generation Party,” which are perfect for<br />
selecting the perfect playlist.<br />
Pandora $4.99/mo<br />
• Audio quality limited to 192kbps streaming.<br />
• Simple interface is better for those looking to<br />
discover new<br />
music only.<br />
• Very simple interface.<br />
• Users create “stations” that play similar songs<br />
to the user-selected artist, title, or genre for<br />
which they search.<br />
Beats: $9.99/mo<br />
• Free trial period (14 days).<br />
• Curates music recommendations based on the<br />
user adding weight to various genres and artists;<br />
recommendations are accurate.<br />
• Poor sound quality with overemphasized bass.<br />
• Hip, young interface; geared toward younger<br />
generations.<br />
• Streaming seems fast.<br />
Google Play: $9.99/mo<br />
• Google makes you create a Google Wallet account<br />
to sign up for the one-month trial of<br />
Google Play All Access Music.<br />
• Technical issues while using Mac Safari.<br />
TIDAL (WiMP): $19.99/mo<br />
• Compatible with many high-end brands' proprietary<br />
iOS/Android apps<br />
• Lossless streaming of CD-quality<br />
audio and HD music videos.<br />
• 25 million tracks available for<br />
on-line streaming.<br />
• iOS and Android apps.<br />
• Curated music editorials writ ten by professional<br />
reviewers<br />
and artists.<br />
Qobuz: $19.99/mo<br />
• Lossless streaming of CD-quality audio.<br />
• Music streaming limited to Qobuz catalog<br />
(which is mainly classical and jazz).<br />
• iOS and Android apps.<br />
• Available offline.<br />
11 Buyer's Guide to Digital Source Components 2014 www.theabsolutesound.com<br />
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