Preamplificador de Phono Manley Labs Chinook Special Edition en color Negro.Las condiciones actuales son como se puede ver en las fotos; funcionando correctamente, incluye caja/empaque original.Los 4 bulbos que traía originalmente son Philips PCC88, se le hizo actualización a 4 Amperex 7308 PQ NOS.No cambios, por favor aclara dudas antes de comprar.Especificaciónes:Vacuum Tube Complement: 6922 x 2 (gain stage) plus 6922 x2 (output stage). Any 6DJ8, 7308, ECC88 types may be used.Unbalanced Input and Output connections via Manley Teflon & Gold plated RCA jacksAutomatic Mute Timer: On initial power up output jacks are muted for approximately 45 seconds. Automatic mute circuit allows tubes to warm up and circuitry to settle. At power down, output jacks are immediately muted.Input Termination Capacitance: 3-position user-selectable capacitor values of 50pF, 100pF, and 200pF yield resultant combinations of: 50, 100, 150, 200, 250, 300, and 350pF. Use these settings typically for Moving Magnet (MM) cartridges.Default Input Impedance: 47k Ohms, with no other DIP switches selected. Use this setting typically for Moving Magnet (MM) cartridges.Selectable Input Impedance: 5-position user-selectable resistor values of 50, 100, 200, 400, and 800 Ohms. There are 32 possible loading possibilities. Use these resistive loading choices typically for Moving Coil (MC) cartridges.Gain: Internal DIP switches select 45dB or 60dBDeviation from RIAA curve: Less than ± 0.5 dB from 20Hz to 20kHz at any gain setting. Typically less than ±1dB from 10Hz to 100kHz.Distortion (THD+N) (47k Ohm Input Termination, 45dB gain, 1kHz sine, 0dBu output): Typical 0.010% THD+N, into 100k Ohm load, BW = 100Hz-22kHzDistortion (THD+N) (47k Ohm Input Termination, 45dB gain, 1kHz sine, 0dBu output): Typical 0.030% THD+N, into 600 Ohm load, BW = 100Hz-22kHzDynamic Range (Gain set to 45db, 200 Ohm source): 91dB @ 1kHz, 0.1% THD+N, BW = 22Hz-22kHzDynamic Range (Gain set to 45db, 200 Ohm source): 107dB @ 1kHz, 1.0% THD+N, BW = 22Hz-22kHzNoise Floor at 45dB gain setting with shorted input: -84 dBu, A-weightedNoise Floor at 60dB gain setting with shorted input: -75 dBu, A-weightedMaximum Input at 45dB gain setting with 20 Ohm Source Z @ 1kHz into 10 kOhm load: 250mV RMS = +34.5 dBu @ 1% THD+N BW=22Hz-22kHzMaximum Input at 60dB gain setting with 20 Ohm Source Z @ 1kHz into 10 kOhm load: 40mV RMS = +34.2 dBu @ 1% THD+N BW=22Hz-22kHzMaximum Output: +37dBu @ 1kHz, 1.5% THD+N into 100 kOhm loadOutput Impedance: 91 OhmsMinimum Recommended Load: 2500 OhmsInternal Power Supply: Fully regulated linear B+, Heater, and control voltage rails.Operating Mains Voltage: Units are built for original destination country's mains voltage: 100V, 120V, or 220-240VAC as indicated on the serial number badge.Power Consumption in Standby mode: 1 Watt (8.0mA @ 120VAC)Power Consumption: 42 Watts (345mA @ 120VAC)Mains Voltage Frequency: 50~60HzPower Transformer: Toroid contruction for low radiation.Mains Fuse for 100V operation: 600mA SLO-BLO size 5mm x 20mmMains Fuse for 117V-120V operation: 800mA SLO-BLO size 5mm x 20mmMains Fuse for 220V-240V operation: 400mA SLO-BLO size 5mm x 20mmStandby Transformer Fuse for all voltage operation 100V-240V: 10mA, SLO-BLO, MDL type size 1/4" x 1 1/4"Badge Lamp: LED illuminationDimensions: W=19", L=11", H=3 1/2"Shipping Weight: 15 Lbs.