Building upon our proud heritage, the Manley Nu Mu merges the esoteric “T-Bar mod” all-tube front end from the legendary Manley Variable Mu® and makes it standard followed by a new high voltage all-discrete solid state audio chain for the smoothest dynamics action coupled to the punchiest sonic path.Featuring Manley’s new HIP function, the Manley Nu Mu finesses dynamic control to bring up lower level details without knocking the life out of exciting transients. Smartly engineered to build efficiently and esthetically designed to elicit ravishing compliments from your clients, both visually and ergonomically, the Manley Nu Mu breaks new ground in performance and value, all proudly handbuilt in California, of course!“HIP” ControlThe “HIP” control allows compression to happen at lower volumes (lower in the dynamic range spectrum), but leavesthe louder dynamics alone while still compressing the overall signal. You get louder soft sections with the original dynamics of the louder sections.Features:Manley IRON® input transformers4 x hand-matched 6BA6 vacuum tubesBalanced XLR inputs & outputsManley HIP function raises soft dynamics without squashing louder passagesHigh Voltage Switched Mode Power Supply custom designed for our vacuum tube audio circuits Controls and Switches:INPUT Level Preset 3-way switches -3dB, 0, +3dBContinuously variable OUTPUT level controlsUnity Gain set INPUT to "0" and OUTPUT control to 11 o’clock. (Input source Z= 150 Ohms, Output load Z= 100 kOhms)Maximum input level: (1 kHz Sine, <0.3% THD+N) -3 = +25 dBu  0 = +21 dBu+3 = +18 dBuMaximum GAIN: 13dBGAIN makeup: 10dB (gain above unity)Output Headroom: 23dB (referenced to +4dBu)Variable ATTACK control: 13msec - 130msecRECOVERY switch 5 steps: 0.1s, 0.16s, 0.32s, 0.64s, 1.7sec.Continuously variable THRESHOLD controlsHardwired Relay Bypass SwitchRatio Mode switches between LIMIT (1.5:1 to 12:1) or COMPRESS (1.2:1 to 3:1)HP SC: High Pass Side Chain Filter -3dB @ 100Hz @ 6dB per OctaveStereo Link establishes Left-Master dynamic control for THRESHOLD, ATTACK, and RECOVERY controlsBeautiful illuminated stereo VU meters read Gain Reduction or Output LevelSidechain INSERT per channel via 1/4" TRS jack TIP=SEND, RING=Return, SLEEVE=GroundMaximum Output: +27dBu (18Vrms) into 100K Ohm load; +24.5dBu (13Vrms) into 600 Ohm load. (1Khz Sine, < 0.3% THD+N, BW 20Hz - 20kHz).Frequency Response: - 0.8dB @ 20Hz, -0.5dB @ 50kHzTotal Harmonic Distortion: <0.05% THD+N (1kHz Sine, +4dBu, BW: 20Hz - 22kHz)Noise floor: -85dB typical (BW: 20Hz - 22kHz)Dynamic Range: 112dBSignal to Noise Ratio: 89dB (referenced to +4dBu)Common-Mode Rejection Ratio (CMRR): 74dB (BW: 20Hz - 22kHz, +4dBu, 1kHz Sine)Output Impedance: 100 OhmsInput Impedance: -3dB= 1 kOhms, 0dB= 2.5 kOhms, +3dB= 4.5 kOhmsAUTOMUTE warmup delay: 30 SecondsPower consumption: 35 WattsStandby Power Consumption: ?? WattsOperating mains voltage: 90 to 254 VAC (internal universal supply)Mains Voltage Frequency: 50-60HzDimensions: 19" x 3 1/2" x 7" (occupies 2u)Unit Weight: 8.5 lbs.Shipping weight: 11.5 lbs.