Manley Labs Jumbo Shrimp Preamplifier
MPN #MSPR
Preamplifer with Remote Control vacuum tube all-triode design
Very short, simple minimalist signal path. All-tube design. 2 x 12AT7 input, 2 x 5670 driver, and 2 x 7044 output.
Signal path furnishes very high dynamic range with prodigious input and output signal headroom.
Signal path also delivers high bandwidth, low noise, modest local negative feedback and low distortion, and is voiced for best musical performance. 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. ALPS audiophile-grade balance and motorized VOLUME pots. We use the nice parts in here! 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.
Specifications
ALL-TUBE: Vacuum Tube all-triode designInput Tubes: 2 x 12AT7EHInterstage Follower Tubes: 2 x JAN NOS GE 7044 or 5687 dual triodesOutput Tubes: 2 x 7044 or 5687 GE JAN NOSFive Line Level Inputs: unbalanced RCAMUTE switch and Warm-Up muting delayALPS motorised volume control: Accurate tracking usually within 0.5dB. Smooth operation. (no detents)ALPS balance control: Center detentedRecord Output: (AKA "REC OUT") Unbalanced RCA jacks, unbuffered, passive (always ON)Main Outputs: Two sets of unbalanced RCA main outs for bi-amping or driving a powered subwooferGain: 12dBInput Impedance: 250 kOhmInput Sensitivity:Volume Control at MAX: 200mV in yields 0.8V out (12dB GAIN)Volume Control at 3 o'clock: 200mV in yields 0.380V out (5.6dB GAIN)Volume Control at 12 o'clock: 200mV in yields 0.115V out (-4.8dB GAIN)Maximum Input Level: 5V in produces 1.5% THD at outputFrequency Response: 10 Hz - 80 KHz; 20 Hz - 20KHz, -0.3dBNoise Floor: Typically -83 dB 20-20K with volume control fully openNoise Floor: Typically -95 dB A WGT 20-20K with volume control fully openNoise Floor (shorted input): Typically -94 dB 20-20K with volume control fully closedNoise Floor (shorted input): Typically -106 dB A WGT 20-20K with volume control fully closedS/N Ratio: typically 95 dB A WGT 20-20KTHD: 0.02% at 1V rms outputOutput Impedance: 50 OhmsMaximum Output: +23dBu @ 1.5% THD into 100K load (10.9V rms)Maximum Output: +20dBm @ 1.5% THD into 600 Ohm loadBadge Lamp: LED illuminationRF Remote Control: commands volume control UP/DOWN; uses 9V batteryPower 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: 15 Lbs.
Write a review about the Manley Labs Jumbo Shrimp Preamplifier
View more products from
Manley Labs
