NuForce uDAC3 - Receiver OPTOMA - Free user manual and instructions

Product Type	USB DAC / Headphone Amplifier / Receiver
Brand	Optoma
Model	NuForce uDAC3
Dimensions (approx.)	2.5 x 1.5 x 0.5 in (63 x 38 x 13 mm)
Weight (approx.)	1.8 oz (50 g)
Power Source	USB bus-powered (5V, 500mA)
Input Interface	USB Type B
Outputs	3.5mm headphone jack, stereo RCA line out
Sample Rate Support	Up to 24-bit / 96 kHz
Signal-to-Noise Ratio	> 100 dB (typical)
Total Harmonic Distortion + Noise	< 0.01% (typical)
Headphone Impedance	16 – 300 ohms
Output Power (Headphone)	Up to 100 mW into 32 ohms
Operating System Compatibility	Windows, macOS, Linux (USB Audio Class 1)
Driver Requirement	None (UAC1); optional ASIO driver for Windows
Construction	Aluminum chassis
Indicators	LED power/status
Cleaning Instructions	Wipe with dry cloth; avoid liquids
Safety Warnings	Use only with USB compliant ports; do not expose to moisture
Repairability	No user-serviceable parts; contact authorized service
Accessories Included	USB cable, quick start guide

Frequently Asked Questions - NuForce uDAC3 OPTOMA

Does the NuForce uDAC3 require drivers to work on Windows?

For basic operation, the uDAC3 uses USB Audio Class 1 and works plug-and-play on Windows without additional drivers. For ASIO support or lower latency, you can install the optional ASIO driver from the Optoma website.

Can I use the uDAC3 with a smartphone or tablet?

It depends on your device. Android devices with USB OTG support may work, but iOS devices typically require a powered USB camera adapter. macOS and Linux work natively.

What is the maximum audio quality supported?

The uDAC3 supports up to 24-bit / 96 kHz PCM audio. It does not support DSD or higher sample rates.

How do I switch between headphone and line outputs?

The headphone and line outputs are both active simultaneously. Inserting a headphone jack does not mute the line outputs; you can use them independently.

Why is there no sound?

Check that the uDAC3 is selected as the audio output device in your system settings. Ensure the USB cable is fully connected and the LED is lit. Also verify volume levels on both the source and the uDAC3.

Can I power the uDAC3 from a USB hub?

A powered USB hub is recommended for reliable performance, as some unpowered hubs may not supply enough current. Direct connection to a computer USB port is preferred.

What headphones work well with the uDAC3?

The uDAC3 is ideal for headphones with impedance between 16 and 300 ohms. High-impedance headphones (over 300 ohms) may require more power; low-sensitivity in-ear monitors are also fine.

Does the uDAC3 have a built-in DAC for gaming consoles?

It may work with PS4, PS5, Xbox, or Nintendo Switch if the console supports USB audio output. However, compatibility is not guaranteed and may require adapters.

How do I clean the uDAC3?

Use a soft, dry microfiber cloth to wipe the aluminum casing. Avoid using any liquids, abrasives, or solvents. Keep the USB port free of dust.

What should I do if the uDAC3 is not recognized by my computer?

Try a different USB cable, port, and computer. On Windows, check Device Manager for unknown devices. Restart your computer. If issues persist, the unit may need repair.

USER MANUAL NuForce uDAC3 OPTOMA

Class leading mobile DAC

Line drawing of a Nu Force device with control knob and buttons (no text or symbols on body)

User manual

APUDACS

FCC Notice - Declaration of Conformity Information

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

WARNING: Only peripherals complying with the FCC class B limits may be attached to this equipment.

Changes or modifications made to this equipment, not expressly approved by us or parties authorized by us could void the user's authority to operate the equipment. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

INTRODUCTION

The NuForce μDAC is a high-performance USB Digital Audio Converter (DAC) that connects your personal computer's audio to your home stereo, desktop sound system, or headphones. The quality and versatility of the μDAC's performance belies its diminutive size. With its extensive power supply, filtering capabilities and charge-pump circuit as a foundation, the μDAC accurately processes incoming data via a USB audio receiver. A D/A converter stage then translates the data into an analog signal with a robust 2.0-Vrms-output capability. The NuForce μDAC's performance equals or exceeds that of a great many audiophile CD players. The unit's exemplary flexibility -- analog RCA, digital coaxial, and high-performance headphone outputs -- is bound to satisfy the needs of the most critical music lover.

Features

Front Cover Descriptions

home stereo or headphones

QUICK START GUIDE

Product Overview

Volume ON/OFF Headphone Output Front Panel Back Panel L R COAXUAL USB INPUT RCA Output Coaxial Output USB Audio Input

Connections

■ 1 x RCA
■ 1 x Coaxial
■ 1 x 3.5mm headphone output

SPECIFICATIONS

Input 1 x Micro USB (USB 1.1, 2.0 compatible)

Output 1 x RCA

1 x Coaxial

1 x 3.5 mm headphone output

Headphone Power Output 80 mW x 2 @ 16 ohm

Native Bit Rate 32, 44.1, 48, 96 kHz, 24-bit

Dynamic Range 90 dB

THD+N 0.05%

Power USB Bus powered, 80 mA/5V

S/N Ratio 98 dB

Dimensions (Depth x Width x Height) 1.5 inches (3.8 cm) x 2.68 inches (6.8 cm) x 0.83 inches (2.1 cm)

Optoma