
Swan%Song%Audio%2021%
Back(Panel(
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• DC!connector!on!the!far!left!is!for!a!5!volt,!4!amp,!center!
positive!DC!power!supply!to!charge!the!batteries!
• Place!the!volume!switch!in!the!LOW!position!to!reduce!the!
volume!range!
• Place!the!ON/Charge!switch!in!the!ON!position!to!listen!and!
CHARGE!to!charge!the!batteries!
• 95%!Charge!can!be!reached!in!6!hours!
Front(Panel(
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• Volume!control!on!the!far!left.!!Turn!to!the!right!to!increase!
the!volume!
• 3.5mm!Phone!connector!for!headphones!
• Toslink!connector!
• Mini!USB!connector.!!The!USB!input!is!automatically!selected!
when!a!USB!device!is!connected!
Operating(Instructions(
• Charge!the!batteries!by!plugging!the!DC!power!supply!into!
the!back!of!the!unit!and!connecting!it!to!an!AC!outlet!
• Place!the!CHARGE!switch!on!the!rear!panel!in!the!up!
position!to!charge.!!Blue!LEDS!will!go!out!when!charged!
• Connect!the!fiber!optic!(TOSLINK)!or!USB!Mini!cable!to!the!
front!panel!and!the!other!end!to!the!music!source!
• The!USB!source!will!be!selected!automatically!when!power!
is!received!from!a!USB!device!
• Rotate!the!VOL!thumbwheel!to!the!far!left!
• Connect!headphones!using!a!stereo!3.5mm!headphone!plug!
• Place!the!rear!Volume!switch!in!LOW!for!IEMs!or!sensitive!
headphones!
• Place!the!rear!switch!in!the!ON!position.!!Green!LEDs!will!
light.!!The!LEDs!are!powered!by!the!DAC!battery!which!will!
last!longer!than!the!analog!batteries!
• Start!the!music!source!
• Turn!the!Volume!control!thumbwheel!to!the!right!to!
increase!the!volume!
• Estimated!run!time!is!7.5!hours!
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Cautions)Warranty)
• Do!not!expose!the!DAC!/!amplifier!to!liquids!or!to!
temperature!extremes!as!deemed!by!Swan!Song!Audio!
• Electromagnetic!interference!will!affect!the!performance!
• Only!headphone!loads!from!8!to!600!ohms!are!supported!
• Electrostatic!headphones!are!not!supported!
• Do!not!charge!with!more!than!5!volts!DC!via!the!supplied!DC!
power!supply!
• Clean!with!“Windex”!and!a!micro!cloth!
• The!warranty!period!is!1!year!from!the!date!of!purchase!for!
manufacturing!defects!and!not!for!wear!and!tear!caused!by!
usage!or!negligence,!as!deemed!by!Swan!Song!Audio!
• Follow!all!LION!Battery!precautions!
• Violating!the!cautions!voids!the!warranty!
• The!unit!can!only!be!serviced!by!directly!or!with!instructions!
from!Swan!Song!Audio!
• Contact!Swan!Song!Audio!for!service!or!any!warranty!
questions!
• Repairs!deemed!by!Swan!Song!Audio!as!outside!the!
warranty!will!be!handled!by!Swan!Song!Audio!at!the!owner’s!
expense%