Operator`s manual
SAFETY PRECAUTIONS I
NOTES ON USE III
INSTALLATION IV
Table of Contents 1
Getting Started 3
What’s In the Box 3
Difference Between BT-4 and BT-6 3
Features 4
First Setup 5
Installing Tubes 5
Cautions on Handling 6
Controls 7
Front Panel 7
Turning Unit On 8
Changing the Volume 8
Switching Inputs 8
Connections 9
Rear Panel 9
Connecting an Audio Device (RCA Cables) 10
Connecting an Audio Device (1/8” Headphone Jack) 11
Connecting a Phono Player Using an External Preamp 12
Connecting to Bluetooth® 13
Connecting to the USB Charging Port 14
Connecting the Speakers 15
For Optimum Speaker Performance 16
Sub-woofer Inputs and Controls (optional) 17
Connecting Sub-woofer to BlueTube Amplier 19
Table of Contents
1 - Table of Contents