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Thank you for purchasing the Dayton Audio DTA-120 Class T Digital Audio Power
Amplifier. This amplifier features the Tripath TK2050 chipset that provides 60W continuous
power per channel (120W total) into an 4 ohm load. Class T amplifiers using Tripath’s
proprietary Digital Power Processing ™ technology offer the audio fidelity of a Class AB
amplifier while providing the power efficiency of a Class D.
Features:
• 60W per channel RMS (120W total) into an 4 ohm load
• Audiophile quality sound with less than 0.01% THD @ 30W
• 1/4" Headphone jack allows the unit to double as a high fidelity headphone amplifier
• Convenient front mounted 3.5 mm input for quick connection of portable audio devices
• Compact extruded aluminum housing with thick black anodized faceplate
• Rear mounted RCA-type input for permanent connection of larger audio devices
• Short circuit, thermal, and overload protection
Front Panel:
1. Power LED
Blue power LED indicates the unit is receiving power and is fully operational.
2. Power / Volume control
This control turns on the unit and adjusts the volume level of the amplifier. When the unit is turned
on the power LED will become fully illuminated. To turn the unit off, turn the control fully counter
clockwise until it “clicks” to the off position. It is normal for the power LED to slowly dim and then
go completely out when the unit is first turned off.
3. Headphone Jack
The DTA-120 also doubles as a headphone amplifier that will drive any headphone easily and
delivers colossal sound stage and effortless dynamic range. The 1/4" stereo jack allows connection
of larger home and studio-style headphones. An adapter is also provided so that smaller 3.5 mm
personnel style headphones can be used.
Note: When headphones are plugged into the headphone jack the speaker output connections
are disconnected.
4. 3.5 mm Audio Input
The unit features a convenient front mounted 3.5 mm stereo input for quick connection of iPods,
MP3 players, and other portable audio devices. A 6" 3.5 mm coiled cable that stretches to 12"
is included.
Note: When a device is plugged into the 3.5 mm audio input the rear mounted RCA input jacks are
disconnected. This allows the user to permanently connect a device to the rear RCA audio inputs and
switch to a portable device by simply plugging into the front mounted input.
Rear Panel:
5. Power Connection
The DTA-120 operates on 24VDC and MUST be used with a power supply that can provide at
least 5A. A world compatible (100V-240V) switch mode power supply is included with the unit and
is supplied with a U.S.A. style cord. To operate in other countries an appropriate power cord will
need to be purchased. The power connection on the unit is a 2.5 mm x 5.5 mm jack with center
pin being positive. Note: If an inappropriate power supply is used and the unit is damaged, the
warranty will be voided.
6. Speaker Outputs
The speaker output connections utilize high current binding posts that are spaced on 3/4" centers
and are compatible with standard double banana plug connectors (sold separately). The connec-
tions are color coded for easy polarity identification. High quality screw-on banana plugs that will
accept 10AWG-18AWG wire are included.
7. RCA-Type Audio Input
RCA-type line level input for permanent connection of larger devices such as CD players, PCs, and
DVD players. An RCA to 3.5 mm adapter is also provided for added connection flexibility. Note: When
a device is plugged into the front mounted 3.5 mm input, the RCA input jacks are disconnected.
Front Panel
Rear Panel