2. Which IQaudIO board is best for me?
Each IQaudIO sound cards has a specific purpose and has been designed to integrate with your
existing HiFi / audio or Raspberry Pi equipment.
BEST
audio playback is from our Pi-DAC PRO, Pi-
DAC+ and Pi- boards. All supporting 24bit depth and 192kHz (Full HD Audio).
Line Out
: A double Phono/RCA connector - Normally Red / White in colour. This output is a variable
analogue signal (0..2vRMS) and connect to your existing HiFi (pre-amp or amplifier) or can be used
to drive Active speakers (with their own amplifier built in).
Balanced Out
: An XLR connector - Normally a 3 pin male connector, this is used in Studio and some
hi-end hifi systems. It can also be used to drive ACTIVE “monitor” speakers as used at discos or on
stage.
STEREO Speakers
: Screw terminals - These are normal HiFi speakers (from bookshelf to floor
standing), normally with 2 or 3 drive units, where the signal is filtered to each drive unit by an internal
cross over within the speaker cabinet. These are known as PASSIVE speakers.
MONO Speaker
: Screw terminal - Single drive unit speaker, as found in a transistor radio or similar.
Headphones
: 3.5mm jack socket. Normally a tip/ring/ground (3pin headphone) delivering stereo
audio to a set of normal headphones. Our headphone amplifiers on the IQaudIO DAC boards can
drive up to 80/90ohm impedance headphones. The headphone output of the Codec+ is also aux out.
Aux In
: A double Phono/RCA connector or 3.5mm socket. Accepts analogue audio up to 1vRMS
input. Can be used to record audio from a variable analogue source such as phone / tape recorder or
similar.
Aux Out
: A double Phono/RCA connector or 3.5mm socket. Delivers analogue audio up to 1vRMS
output. Can be used to feed audio into an amplifier (but at a reduced volume compared to Line Out)
Mic In
: a 3.5mm socket for use with an external ELECTRET microphone. Some of our boards have a
built in MEMS microphone that is disabled when the external microphone jack is inserted into the
3.5mm socket.
Line Out
(RCA)
Balanced
(XLR)
STEREO
Speakers
(2x35w)
MONO
Speaker
(
1.2w
)
Head-
phones
Aux In
1vRMS
Aux Out
1vRMS
Ext
Mic
Built
in Mic
Pi-DAC PRO
Pi-DAC+
Pi-
Pi-Codec+
Pi-CodecZero
Pi-DACZero
(Electret)
(MONO)
(No Fit)
(with HP board)
(Electret)
(MONO)
(XLR board)
(No Fit)
(3.5mm)
v32
24-Nov-2019
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