Rockville BluTube Series Audiophile Grade Tube Amplifier with Bluetooth

Introduction

Thank you for purchasing the Rockville BluTube Series Audiophile Grade Tube Amplifier w/Bluetooth. Please read this owner's manual carefully for proper use of your Rockville BluTube Tube Amplifier w/Bluetooth. For technical assistance, please call the technical help line at 1-646-758-0144, Monday through Friday, 9am to 5pm EST.

Includes:

Tube Amplifier/Receiver
5 ft RCA to 3.5mm cable
5.5 ft Power cable
Owner's manual
Warranty card

NOTE: You may hear a humming noise when the BluTube unit is first powered on. This is normal and is due to the tubes warming up. The humming noise will go away after approximately 1 minute.

Important Safety Instructions

⚠️ CAUTION: RISK OF ELECTRIC SHOCK ? DO NOT OPEN

To reduce the risk of electric shock, never open the unit. There are no user serviceable parts; refer service to an authorized Rockville service center.
Do not expose this unit to any kind of moisture. No objects filled with liquids, such as vases or cups, should be placed on or near this appliance.
Please ensure that the unit is situated in a properly ventilated area.
Avoid direct sunlight or heat radiating appliances.
Avoid placing on surfaces that are subject to constant vibration.
Make sure the unit is placed on a level and stable surface.
No open flames, such as lit candles, should be placed on or near the unit.
Before turning on the power for the first time, make sure the power cord is properly installed and fully uncoiled.

Functions and Connections

The amplifier features a comprehensive front and rear panel for control and connectivity.

Front Panel

A line drawing of the front panel shows the following controls and ports:

1. Power switch: [Power Switch] (ON/OFF)
2. USB port: [USB Port] (supports charging)
3. 3.5mm headphone jack: [Headphones Jack]
4. Play/pause - Previous/next control knob: [Control Knob] (Press for Play/Pause; Turn left for Previous Track, Turn right for Next Track. Slow turning provides gradual track selection.)
5. Treble adjustment knob: [Treble Knob]
6. Bass adjustment knob: [Bass Knob]
7. VU meter: [VU Meter] (displays input signal level)
8. Bluetooth LED indicator: [Bluetooth LED]
9. Input selector switch: [Input Selector]
10. Volume knob: [Volume Knob]

Rear Panel

A line drawing of the rear panel shows the following ports and terminals:

11. Auxiliary Input RCA jacks: [Auxiliary RCA Inputs] (PHONO, CD/DVD)
12. Optical/Coaxial input selector switch: [Optical/Coaxial Selector]
13. Coaxial input: [Coaxial Input]
14. Optical input: [Optical Input]
15. Subwoofer Output RCA jack: [Subwoofer Output]
16. Speaker Terminals: [Speaker Terminals] (Left and Right banana plug/binding post outputs for 2 speakers)
17. IEC port with user serviceable fuse: [IEC Power Port] (110V 60HZ/FUSE 2A, USE ONLY WITH 250V FUSE)

Set-up

The setup diagram illustrates connecting various audio sources to the amplifier and connecting speakers.

Connections Overview:

USB Input: Connect a USB drive to the front panel USB port. The unit supports USB charging.
Bluetooth: Connect wirelessly from a smartphone or laptop.
Computer/Laptop: Connect via USB or other appropriate audio outputs.
CD/DVD Player: Connect via RCA, Optical, or Coaxial inputs.
Television: Connect via Optical or Coaxial inputs for digital audio.
Record Player: Connect via the PHONO RCA inputs.

Speaker Connection: Connect speakers to the rear panel speaker terminals (16). Ensure correct polarity. The total impedance per channel must not be less than 4 ohms.

ATTENTION: If your subwoofer has L/R RCA inputs, use a male to dual male Y cable.

Inputs

Bluetooth

Turn on the unit and set the input selector switch to BT/USB (middle position). Remove any inserted USB drive to ensure Bluetooth mode is active.
The BT LED indicator will flash, indicating pairing mode.
Turn on the Bluetooth feature on your device and ensure it is in "discoverable" mode.
Find and select "BluTube" in the list of discoverable devices on your device.
If prompted for a pairing code, enter: 0000.
Playback Control: Press the control knob to play or pause. Turn the knob left for previous tracks, right for next tracks. Slow turning allows for gradual track selection.
Playback can also be controlled from your Bluetooth device.

The amplifier will remember and automatically connect to the last paired device.

USB

Place the input selector switch to BT/USB (middle position).
Insert a USB drive into the USB port on the front panel.
The unit will automatically begin to play music stored on the external device.
Playback Control: Press the control knob to play or pause. Turn the knob left for previous tracks, right for next tracks. Slow turning allows for gradual track selection.

Inserting a USB drive will override Bluetooth mode.

Auxiliary

Use the RCA Auxiliary Inputs to connect external stereo signal sources such as CD players, DVD music players, MP3 players, etc.

Place the input selector switch to Phono CD/DVD (up position).
Connect your source device to the corresponding RCA inputs at the rear of the unit.

Optical/Coaxial

Many TVs, Digital set-top boxes, game consoles, and DVD players have optical (fiber optic) or coaxial outputs. To connect via optical or coaxial input, follow these steps:

Place the input selector switch to Optical/Coaxial (down position).
Set the Optical/Coaxial selector switch on the back of the unit to the desired input mode.
Use a digital optical audio cable or coaxial cable to connect the source to the desired input port on the amplifier.

Outputs

Speaker Output

The amplifier features left and right banana plug/binding post terminals to connect two speakers.

When connecting speakers, be sure to observe correct polarity. The total impedance of your speakers must not be less than 4 ohms.

Subwoofer Output

There are two RCA subwoofer outputs internally wired in parallel. You can use either one to feed the signal to a powered subwoofer.

Use standard L/R RCA jacks to feed the signal from both outputs to any powered sub with L/R RCA inputs. Note: since both outputs provide an identical mono signal, it doesn't matter which one you hook the left and right RCA jacks to.
Use a monoaural RCA cable to feed the signal from either jack to any powered subwoofer with an LFE (Low Frequency Effect) RCA input or a single RCA sub input.

3.5mm Headphone Output

The 3.5mm headphone output is a direct plug-and-play connection. Simply connect your headphones and you are ready to listen. When the 3.5mm jack is in use, speaker output will be cut off.

Features and Specifications

25 watts RMS x 2 @ 8 ohms
35 watts RMS x 2 @ 4 ohms
Built-in Preamplifier
RCA inputs for connecting devices like a TV, Laptop, MP3 player, etc.
RCA phono inputs for connecting record players
Optical input for connecting TVs, digital set-top boxes, DVD players, etc.
Coaxial input for connecting TVs, cable set-top boxes, etc.
VU meter
Tubes and knobs feature blue LED illumination (BluTube LED model only)
Adjustable bass and treble (2-band equalizer)
Built-in Bluetooth with 33-foot range
Bluetooth: 2.1 +EDR
USB: Supports WAV/MP3/WMA/APE/FLAC (900Kbps)
USB input for music files from USB thumb drive
USB can charge your phone or other USB device
Rear Speaker Terminals: Banana plug/binding post outputs for 2 speakers
Subwoofer output
Headphone output
Frequency Response (±3dB): 25Hz – 20kHz
Input Impedance: 47kΩ
Input Sensitivity: 300mV
Output Impedance: 4 – 16 ohms
Total Harmonic Distortion (THD): ≤0.02%
Signal-to-Noise Ratio (S/N): ≥86dB
110V power supply
Unit weight: 6.6 lbs
Unit dimension: 10.6" x 10.2" x 5.1"

Troubleshooting

PROBLEM	SOLUTION
No power	Make sure the unit is plugged in and the power switch is in the ON position. Check and replace the fuse if necessary.
Humming noise when powered on	The humming noise is due to the tubes warming up and is completely normal. They take approximately 1 minute to warm up and the hum will go away at that point.
No sound/ distorted sound	Check that all cables are plugged in correctly. Check the amplifier and input source volume settings. Check the input switch to ensure the proper source is selected. Check that the Optical/Coaxial selector switch on the rear of the unit is set to the proper input mode.
Bluetooth	Check to see that both devices are turned on and that your Bluetooth device is discoverable. Turn both devices off and then on again. Make sure that you've selected the proper source. Make sure that the Bluetooth device is within 5 feet of the unit. Move devices away from other Bluetooth devices, wireless routers, and other electronics. Make sure the unit is not paired to another device. Make sure there are no USB devices plugged in.
No USB playback	Make sure you've selected the proper source. Make sure that the audio files are in the specified format. Check the USB drive for damage.

Federal Communications Commission Compliance Information

Responsible party name: Rockville

Address: 600 Bayview Ave., Entrance A, Inwood, NY 11096

Hereby declares that the product(s) BluTube Tube Amplifier complies with FCC rules as mentioned in the following paragraph:

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.

Note: 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 generates, 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:

Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.

Contact and Warranty

For technical assistance, please call the Rockville technical help line at 1-646-758-0144, Monday through Friday, 9am to 5pm EST.

Visit us online at RockvilleAudio.com.

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