Nobsound NS-08E User Manual

1. This is tube headphone amplifier that can greatly improve the sound quality for
headphones, but also can be used as tube preamp, its 3.5mm headphone jack
also can connect amplifier or active speakers.
2. Default 6J3 vacuum tubes, also can be directly replaced by the following models
6J1, 6ж1П, 6AK5, 6BC5, 403A/B, 5654, EF95, CV850, 6J2, 6ж2П, 6AS6, CV2522,
CV4011, 6J3, 6ж3П, EF94, CV848、6BC6, 6AG5, 6J4, 6ж4, 6136, 6BX6, 6AC7,
6AU6, 6J5, 6ж5П, CV2521, 6F36, 6AH6, 6AN5, 6K4, EF93, 6K5, 6K4П, 6BA6,
6DA6, 5749.
Warm Tips
NS-08E Mini Tube Headphone Amplifier
User Manual
How to Use
Nobsound
1. Connect audio source such as phone, MP3, TV, tablet, computer, CD player etc.
to 3.5mm AUX input of NS-08E, and connect headphone or power amplifier or
active speaker to its 3.5mm output. Recommend high-quality 3.5mm cable.
2. Connect power adapter to NS-08E and then connect power adapter to the socket.
3. Press the red button on the back panel to power it on and warm up for a while.
4. Play music on your audio device, and rotate the volume control to adjust the
volume until perfect and enjoy HiFi music.
Parameters
Audio input: 3.5mm AUX
Audio output: 3.5mm headphone jack
Max output power: ≥1100 mW (32 ohm)
Matched Headphone impedance: 18-600 ohm
Frequency Response: 20Hz - 30KHz
THD: <0.005%
SNR: ≥110 dB
Power supply: DC 6V /2A

Nobsound NS-08E Specifications

General

Brand	Nobsound
Model	NS-08E
Category	Amplifier
Language	English

Summary

Nobsound NS-08E Amplifier: Essential Information

Device Functionality and Tube Compatibility

Discusses the amplifier's function as a preamp and lists compatible vacuum tubes for replacement.

How to Use the NS-08E Amplifier

Details connecting audio sources, power, and operating the device for playback.

Douk Audio U10 Amplifier: Important Details

U10 Warm Tips and Usage Guidelines

Advises on power adapter, input/output connections, tube compatibility, and driving headphones.

U10 Introduction and Features

Highlights stereo inputs, dual outputs, power, tube design, and sound shaping capabilities.

U10 Operation Instructions

Step-by-step guide for connecting power, headphones, audio source, and operating the device.

Douk Audio U10 Amplifier Specifications and Panel Layout

U10 Amplifier Technical Parameters

Lists key specifications including brand, model, inputs, outputs, power, impedance, and dimensions.

U10 Front and Back Panel Overview

Identifies ports and controls on the front and back panels of the U10 amplifier.