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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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