Manley Jumbo Shrimp preamplifier

Manley Jumbo Shrimp preamplifier

Manley Jumbo Shrimp preamplifier


Product Info


An all tube, all-triode design with very short, simple minimalist signal path, the Jumbo Shrimp furnishes very high dynamic range with prodigious input and output signal headroom. Its signal path also delivers high bandwidth, low noise, modest local negative feedback and low distortion, and is voiced for best musical performance. There is no global feedback thus enabling the Shrimp to be fast and nimble sounding.

Manley Jumbo Shrimp Featutes
- Radio-Frequency based remote command of the silicon-free high-quality motorized VOLUME attenuator set, for infinitely resolvable control of listening levels. No need to "point" the remote in any direction. Now the Shrimp's attenuator set can be controlled from another nearby room, through walls, floors and doors, and through opaque equipment closet or cabinet doors too!
- Dedicated White Follower stage using the 5670 dual triodes effortlessly drives all passive interstage circuits; volume, balance and output stages receive crisp instruction from the Follower regardless of control settings.
- Generous energy storage via large power supply capacitors for more impact in the bass.
- No global feedback makes the Shrimp very fast sounding.
- Non-inverting two-triode gain stage is direct-coupled for most pure signal path.
- Cool White-follower output stage provides low 50 Ohm output impedance. This is much better than a boring plain ol' cathode follower. The Shrimp can drive anything, not to worry.
- Filament supply floated 80V above chassis ground for quieter operation and longer tube life.
- MIT/MultiCap polypropylene audiophile-grade signal coupling capacitors, including two 30 uF monsters on the output stages.
- Warm-up delay / MUTE button. Features and quality components usually not found on entry-level pieces.

Jumbo Shrimp Technical Infomation
- Input Tubes: 2 x 12AT7EH large plate Electro-Harmonix Russian
- Interstage Follower Tubes: 2 x 5670 GE USA dual triodes
- Output Tubes: 2 x 7044 or 5687 GE JAN NOS
- Five Line Level Inputs: unbalanced RCA
- MUTE switch and Warm-Up muting delay
- ALPS motorised volume control: Accurate tracking usually within 0.5dB. Smooth operation. (no detents)
- ALPS balance control: Center detented
- Record Output: (AKA "TAPE OUT") Unbalanced RCA jacks, unbuffered, passive (always ON)
- Main Outputs: Two sets of unbalanced RCA main outs for bi-amping or driving a powered subwoofer
- Gain: 11.8dB
- Input Impedance: 250 kOhm
- Input Sensitivity: 200mV in yields 1V out
- Maximum Input Level: 5V in produces 1.5% THD at output
- Frequency Response: 10 Hz - 80 KHz; 20 Hz - 20KHz, -0.3dB
- Noise Floor: Typically -83 dB 20-20K with volume control fully open
- Noise Floor: Typically -95 dB A WGT 20-20K with volume control fully open
- Noise Floor (shorted input): Typically -94 dB 20-20K with volume control fully closed
- Noise Floor (shorted input): Typically -106 dB A WGT 20-20K with volume control fully closed
- S/N Ratio: typically 95 dB A WGT 20-20K
- THD: 0.02% at 1V rms output
- Output Impedance: 50 Ohms
- Maximum Output: +23dBu @ 1.5% THD into 100K load (10.9V rms)
- Maximum Output: +20dBm @ 1.5% THD into 600 Ohm load
- Badge Lamp: LED illumination
- RF Remove Control: commands volume control UP/DOWN; uses 9V battery
- Power Consumption: 55 Watts (485mA @ 120VAC)
- Operating Mains Voltage: Units are purpose built for original destination country's mains voltage: 100V, 120V, or 220-240VAC as indicated on the serial number badge. Power transformer must be replaced in order to change mains operating voltage. 120VAC units may NOT be rewired to put the primaries of the power transformer in series for 220-240V operation or a large radiated field of hum will develop. If changing locations/voltages, the power transformer must be replaced with the dedicated one for the voltage at which it will operate.
- Mains Voltage Frequency:
- Dimensions: W=19", L=11", H=3 1/2"
- Shipping Weight: 17 Lbs.

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