Carvin's Concert 44 series of American made mixers. The C2444, featuring 24 channels with true 4-bus performance. Used but in great condition and working perfectly. No key for case.True 4-Bus DesignThe Concert 44 Series allows for increased mixing flexibility over standard stereo consoles by letting you assign channels to one of the 4 sub groups or L/R. This allows you to mix the entire drum, horn, choir section, etc. into one sub group and then adjust the master level of that sub group to the L/R output. This is an easy way to control the volume of grouped mics or inputs. If you don't need subgrouping, you can depress the L/R channel button and the channel goes directly into the L/R output like a standard stereo console. All 4 sub group outputs have balanced outputs for long cable runs.Two Effects Sends/ Two 24-bit FX ProcessorsTwo built-in 24-Bit effects processors, each offering 256 stereo effects, is a first in a 4-bus mixing console. Since there are two, you no longer have to choose between that vocal reverb with delay and that guitar chorus - you can have both. Each processor offers reverbs, choruses, flanging and echoes with fully adjustable parameters for damping, decay, depth, speed, time and regeneration. Both processors can be sent back into the monitor mix so the performers can hear exactly what the audience is hearing.Four Monitor SendsEvery channel can send up to 4 different monitor mixes while still having access to 2 effect sends. For the first time, give all of your performers their own monitor mix. All 4 monitor sends have balanced outputs for long cable runs.3-Band EQ/Mid SweepA powerful EQ system with a 15 dB boost and cut range delivers all the tone you want. The LOW frequency control builds low-end response starting with 20 Hz through 80 Hz for a solid non-flabby bass. The exclusive offset of the MID FREQ. control ends the confusion of selecting your mid frequency from 100 Hz to 5kHz. The MID cut and boost control adjusts the gain to the perfect mid-dip or boost curve to enhance all instruments and vocals. The 11.5k Hz HI treble control adds sparkle to your top-end without adding harshness. Both the LOW and HI are shelving, which means they are effective from 20 Hz and up to 20k Hz. The LO CUT switch eliminates stage rumble or other unwanted low frequencies that would normally rob power from your subwoofers.Two 9-Bands EqualizersEqualizers provide 1 octave adjustments to tune in your overall sound and control feedback. Unlike one stereo equalizer, two independent 9 bands give you total flexibility. With two convenient buttons, you can assign either EQ to the R/L outputs or to the 1 & 2 monitor outputs. Center frequencies are 63, 120, 250, 500, 1k, 2k, 4k, 8k & 16k Hz.Channel FeaturesEvery channel has a full balanced XLR and LINE (1/4") pre-amp with an INSERT jack for a compressor or EQ that also serves as a DIRECT out when plugged half way. The PAN control directs the channel into the L/R output or any of the 4 sub groups after depressing the appropriate ASSIGN switches. A PFL (pre fader listen) switch allows you to hear the channel before the fader is turned up in the headphones. A solid on condition of the PEAK led indicates that the MUTE switch has been activated which turns the channel off including all monitor and effect sends. When flashing during use, the PEAK led also lets you know when to adjust the channel's GAIN control to prevent channel overloading. The SIGNAL led lets you know that a signal is coming through the channel starting at --20 dBu. A silky smooth 60mm audio taper FADER delivers professional fade-outs. The PHANTOM power switches provide power through the XLR connectors for use with condenser mics like the Carvin CM90E in groups of 8 channels.Master FeaturesEach of the 4 Sub Group faders can be switched to the R/L outputs or used independently through their own balanced output jacks. Each of the sub group's PFL switches allows you to listen to the sub groups in your headphones before it is turned up. The R and L MAIN output faders are independent for added flexibility over a single stereo fader. A MONO control sums both the R/L output together for a center, side fill.