Manley Stingray iTube Integrated Amplifier
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Product Details


We present the Stingray iTube integrated tube amplifier with iPod dock and remote control.

The STINGRAY iTube is the newest incarnation of Manley Labs' acclaimed Stingray Integrated Amplifier. The first Stingray amplifiers were designed with particular attention paid to optimal component placement, allowing for purity of sound and symmetry of the signal path layout. Manley's Stingray has been one of their best selling products in the past few years. The Stingray iTube retains the tube circuitry and marvellous output transformers as the original but now features several important improvements:

An iPod dock has been integrated into the Stingray iTube as the 4th input source. The Manley iTube has been certified by Apple and officially sanctioned as a "Made for iPod" product. The Stingray's Remote Control commands the iPod PLAY/PAUSE and TRACK FORWARD/BACK controls.

Your iPod video output is available at the S-Video output jack located on the left side facia.

High voltage tube energy storage has been increased, producing much improved low frequency control and creating a clearly audible sonic impact.

A headphone jack has been added to the right side of the facia. This jack re-routes the output from the speaker binding posts and mutes the Subwoofer output feed.

The Remote Control works with both Radio Frequency and Infrared technologies. Using the remote in RF mode gives freedom from having to "point and shoot." The RF mode permits omnidirectional use and works through walls and cabinets. IR capability is included for those with Universal Learning Remote Controls for integration into existing systems. The volume, balance control, input switching, and iPod interface commands are all available on both modes of the Remote. Additionally, you can perform the MUTE, DIM, INSERT and SLEEP commands with the Remote.

Each INPUT can be individually level trimmed to match and to optimize system gain staging of various input devices.

The stylish blue LED displays surrounding the INPUT and VOLUME encoder knobs can be dimmed or turned off entirely, after a user-settable time period, or a "screen-saver" random light sequence can be selected. Speed and intensity of the "Starlight" mode can be altered to taste.

All user settings are written to the iTube's memory when the unit is put into STANDBY mode and is retained if the power supply is interrupted.

Individual sealed gold contact relays deliver the selected input into the volume control system before hitting the first 12AT7 input tubes. Following the 6414 driver/phase splitter, the EL84 output stage can be switched between either (around) 20 watts of TRIODE power or 40 watts of Ultra Linear mode push-pull operation. Individual bias for each tube is easily adjusted using the trimpots and test points, conveniently located on the top of the amplifier. The Stingray's power supply is extra-rugged and stiff - a MANLEY hallmark.

Post-volume SUBWOOFER OUTPUT allows easy hookup of outboard line-level driven active powered subwoofers. This output is after the volume control so the subwoofer will track the volume level changes of the main speakers. The SUB OUTPUT is a line level and full frequency output and is AFTER the volume control so your powered subwoofer follows the same volume level as your main speakers. These are connected via line-level unbalanced phono sockets designed feed the line inputs of your subwoofer - NOT the speaker jacks!

A switchable TAPE LOOP is standard. The TAPE SEND is the output of the selected input before the volume control. The TAPE RETURN can also be used as a 5th line input if needed.

RECORD OUT (AKA Tape OUT) is BEFORE the volume control so you can record whatever input you have selected without your listening level affecting the level going to your recorder. These are also unbalanced phono/RCAs. As it's UNbalanced and UNbuffered Manley advise you check out the input impedance to your recorder to make sure it won't load down the Stingray main input while it is plugged in. Usually with unbuffered record outs Manley Labs recommend you plug in your recorder only when you are actually recording.

Tape LOOP: Also known as an INSERT point, the SEND or Tape Out comes off the selector switch as the Record Out option does, going to your outboard EQ or tape recorder and then the signal returns (RETURN) to the Stingray in front of the volume control. A toggle switch selects whether the Tape LOOP (and whatever is plugged into the Tape Loop) is active or the signal goes straight through the Stingray as normal.

Technical Specifications

Technical Specifications


  • 3 x Stereo Line Phono/RCA Inputs
  • 1 x iPod dock (analog output used)
  • TRIODE - UL Output Stage Mode Switching
  • TAPE LOOP (Insert) with Bypass switch
  • S-VIDEO OUT (from iPod dock)
  • 1/4" Headphone OUTPUT (mutes spkrs & sub output)
  • Logic controlled Volume and Balance functions
  • All-Vacuum Tube Lo-feedback Stereo Integrated Design
  • Output Tubes: 8 x EL84 Ships with Russian NOS EL84M
  • Driver Tubes: 2 x 6414 Ships with GE or RAYTHEON JAN NOS USA or 6414W
  • Input Tubes: 2 x 12AT7EH Ships with: 12AT7EH large plate Electro-Harmonix Russian
  • Maximum Output Power UL mode: 32 Watts x 2 channels 1.5% THD @ 1kHz into 5 Ohms
  • Maximum Output Power TRIODE mode: 18 Watts x 2 channels 1.5% THD @ 1kHz into 5 Ohms
  • Frequency Response: 15 Hz - 58 kHz, -1dB
  • Gain: 35 dB at max Volume
  • Input Sensitivity UL Full Power: 210 mV in = 32 watts out into 5 Ohms with volume control at maximum
  • Input Sensitivity Triode: 41mV in = 1W into 5 Ohms with volume control at 20dB gain setting
  • Input Sensitivity UL: 35mV in = 1W into 5 Ohms with volume control at 20dB gain setting
  • Crosstalk: -72dB
  • Noise: 5.8 microVolts A-WGT; @600 Ohms
  • S/N Ratio: typically 97 dB A-WGT @ 600 Ohms
  • S/N Ratio: typically 72 dB A-WGT, 1W output, 20dB gain, Source Z = shorted input
  • THD+N Ratio: typically 64 db at 1W output, Bandwidth 22Hz-22kHz, Source = 1kHz Sine wave
  • Input Impedance: 12 kOhm nominal
  • Output Impedance at TAPE Output: 47 Ohms
  • Optimum Speaker Load: 5 Ohms
  • Speaker Terminal Output Impedance at 20 Hz: 2.36 Ohms
    at 1KHz: 2.00 Ohms
    at 20KHz: 1.83 Ohms
  • Damping Factor into 8 Ohms (UL mode): 6.7 @ 100 Hz; 7.2 @ 1 kHz; 6.9 @ 10 kHz
  • Damping Factor into 8 Ohms (Triode mode): 7.2 @ 100 Hz; 7.8 @ 1 kHz; 8.0 @ 10 kHz
  • Headphone Jack Output Impedance: 53 Ohms
  • Scratch Factor: Use 5p pieces under pointed feet to avoid marking cabinetry. Try £1 coins if you are in upper tax brackets. Paper currency does not function as well. Euro coins work 1.54 times better (varies with exchange rates)
  • Remote Control Type:RF (radio frequency) and IR (infrared), user selectable
  • Volume Control:Cirrus Digital Level Control System, controlled by Grayhill Rotary Encoders
  • Volume Control Range:102dB in 1dB steps turning slowly, with larger steps as rate of turn increases
  • Power Consumption (Standby, no iPod charging):6W

  • Power Consumption (Standby, iPod charging:12W
  • Power Consumption Idle: 198W
  • Maximum Power Consumption at Full Power: 300W
  • MAINS Fuses:
    100~120VAC operation: MDL 3 AMP / 250 Volt SLO-BLO
    220~240VAC operation: MDL 1.5 AMP / 250 Volt SLO-BLO
  • B+ FUSES (2): MDA 1/4 AMP, 250 Volt SLO-BLO, Ceramic.

  • Power Supply: UK units factory set 220-240VAC operation.
  • Operating Mains Voltage: changeable with power transformer re-wiring on PCB and fuse value change.
  • Mains Voltage Frequency:
  • Power Cord: Detachable IEC standard.
    Appropriate power cord supplied.
  • Dimensions: W= 19", D=14", H= 7 1/2"
  • Shipping Weight: 35lbs/16kgs


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