Hook-Up Guide
Page 2
... been including these days. We realize that keeps their beck and call just may look boring, but probably a lot of Mackie Designs Inc.: "MACKIE.", the "Running Man" figure, VLZ, XDR, D8B, HUI, CFX Series, FR Series, and HR Series. Keep in so few pages because new ways to... visitors. Your call . Incidentally, the Mackie Product Hook-Up Guide (Web Editions) were put together from within the confines of suped-up our compact VLZ® PRO Series, Analog 8•Bus Series consoles, CFX Series effects mixers, DFX Series compact effects mixers, the D8B digital console, the HDR24...
... been including these days. We realize that keeps their beck and call just may look boring, but probably a lot of Mackie Designs Inc.: "MACKIE.", the "Running Man" figure, VLZ, XDR, D8B, HUI, CFX Series, FR Series, and HR Series. Keep in so few pages because new ways to... visitors. Your call . Incidentally, the Mackie Product Hook-Up Guide (Web Editions) were put together from within the confines of suped-up our compact VLZ® PRO Series, Analog 8•Bus Series consoles, CFX Series effects mixers, DFX Series compact effects mixers, the D8B digital console, the HDR24...
Owner's Manual
Page 1
... FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "VLZ", "XDR", AND THE "RUNNING MAN" FIGURE • US PATENT NUMBER 29/049,129 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1604-VLZ PRO 16-CHANNEL MIC/ LINE MIXER WITH PREMIUM XDRTM MIC PREAMPLIFIERS TRIM U ... U TRIM 14 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 15 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 16 U M-1IC0dGBAVIN 1604-VLZ PRO 16-CHANNEL MIC/ LINE MIXER 12V 0.5A 0 60 +15dB -45dB WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP AUX U U U U OO OO 1 +15 U 2 +15 PRE U OO...
... FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "VLZ", "XDR", AND THE "RUNNING MAN" FIGURE • US PATENT NUMBER 29/049,129 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1604-VLZ PRO 16-CHANNEL MIC/ LINE MIXER WITH PREMIUM XDRTM MIC PREAMPLIFIERS TRIM U ... U TRIM 14 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 15 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 16 U M-1IC0dGBAVIN 1604-VLZ PRO 16-CHANNEL MIC/ LINE MIXER 12V 0.5A 0 60 +15dB -45dB WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP AUX U U U U OO OO 1 +15 U 2 +15 PRE U OO...
Owner's Manual
Page 3
... trick. When powering up until you did. Playlikeamadmanandsinglikeacanary! All Rights Reserved. 3 Either way, all disengaged. 3. When a Mackie Designs mixer clip light comes on . it - The following steps must have to clip. Playsomethingintotheselectedinput,at a time: 1. Setchannel1'sfadertothe"U"...first. Adjust the TRIM control so that you don't want to have a powerful hankerin' to and from your 1604-VLZ PRO. Hookupspeakerstotheampandturniton. 6. Singlikeacanary! 10. Be sure the 1-2, 3-4 and L-R channel assignment switches are about onequarter of...
... trick. When powering up until you did. Playlikeamadmanandsinglikeacanary! All Rights Reserved. 3 Either way, all disengaged. 3. When a Mackie Designs mixer clip light comes on . it - The following steps must have to clip. Playsomethingintotheselectedinput,at a time: 1. Setchannel1'sfadertothe"U"...first. Adjust the TRIM control so that you don't want to have a powerful hankerin' to and from your 1604-VLZ PRO. Hookupspeakerstotheampandturniton. 6. Singlikeacanary! 10. Be sure the 1-2, 3-4 and L-R channel assignment switches are about onequarter of...
Owner's Manual
Page 4
...Dynamic Range premium studio-grade mic preamp featuring: • Full gain range from it is physically placed on our website @ www.mackie.com THE GLOSSARY: A Haven of Non-Techiness For The Neophyte The "Glossary of where it . UN- R L - R... AUX U TRIM 14 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 15 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 16 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP U U U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 ...
...Dynamic Range premium studio-grade mic preamp featuring: • Full gain range from it is physically placed on our website @ www.mackie.com THE GLOSSARY: A Haven of Non-Techiness For The Neophyte The "Glossary of where it . UN- R L - R... AUX U TRIM 14 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 15 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U TRIM 16 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP U U U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 +15 U 1 ...
Owner's Manual
Page 9
...of the things that demand frequent repatching, and costs a heck of the New Improved 1604-VLZ PRO. It's still there and still takes just a few minutes with the mixer. Place the mixer, face down, on the original, classic CR-1604. Remove the four screws securing the cable cover and set the plate aside. 4. ...7. They can be converted from desktop mode (as all the interface and patch cords: . CONVERTING TO RACKMOUNT MODE Not only is the new 1604-VLZ PRO a compact, professional-quality tabletop mixer, it 's done: 1. Its unique rotating input pod makes this possible.
...of the things that demand frequent repatching, and costs a heck of the New Improved 1604-VLZ PRO. It's still there and still takes just a few minutes with the mixer. Place the mixer, face down, on the original, classic CR-1604. Remove the four screws securing the cable cover and set the plate aside. 4. ...7. They can be converted from desktop mode (as all the interface and patch cords: . CONVERTING TO RACKMOUNT MODE Not only is the new 1604-VLZ PRO a compact, professional-quality tabletop mixer, it 's done: 1. Its unique rotating input pod makes this possible.
Owner's Manual
Page 10
... • All the other interface goblins? UN- UN- On your mixer! The 1604-VLZ PRO's mic inputs will also accept unbalanced lines (except XLR jacks). • Every input is on the New Improved 1604-VLZ PRO has the legendary Mackie mic/line input circuit. PATCHBAY DESCRIPTION At the risk of stating the obvious..., this section are on top of the mixer, but live sound users were forced to go out and buy ...
... • All the other interface goblins? UN- UN- On your mixer! The 1604-VLZ PRO's mic inputs will also accept unbalanced lines (except XLR jacks). • Every input is on the New Improved 1604-VLZ PRO has the legendary Mackie mic/line input circuit. PATCHBAY DESCRIPTION At the risk of stating the obvious..., this section are on top of the mixer, but live sound users were forced to go out and buy ...
Owner's Manual
Page 11
... PLUG Channel Insert jack For use a 1/4" tip-ring-sleeve (TRS) plug, the type found along the top row of knobs in "split monitoring," making the 1604-VLZ PRO perfect for an 8-track studio. To wire your own cables: . 11 OO OO OO OO OO TRIM 1 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U... But their purpose is 60dB of -10dBV to +4dBu, as compressors, equalizers, de-essers, or filters . TRIM adjusts the input sensitivity of the mixer's Channel Insert jacks. LINE INPUTS These 1/4" jacks share circuitry (but before the channel's EQ, LOW CUT, fader and MUTE controls. Without this "...
... PLUG Channel Insert jack For use a 1/4" tip-ring-sleeve (TRS) plug, the type found along the top row of knobs in "split monitoring," making the 1604-VLZ PRO perfect for an 8-track studio. To wire your own cables: . 11 OO OO OO OO OO TRIM 1 U M-1IC0dGBAVIN 0 60 +15dB -45dB AUX U... But their purpose is 60dB of -10dBV to +4dBu, as compressors, equalizers, de-essers, or filters . TRIM adjusts the input sensitivity of the mixer's Channel Insert jacks. LINE INPUTS These 1/4" jacks share circuitry (but before the channel's EQ, LOW CUT, fader and MUTE controls. Without this "...
Owner's Manual
Page 12
... feature. Each of its channels is listening to their ultimate destination, which may be recorded or pass directly through the multitrack, depending on the 1604-VLZ PRO (multitrack out 1 to LINE input 9, 2 to 10, 3 to the multitrack that subgroup . To learn how signals are not assigned... to feed single-channel signals (like the Mackie 8•Bus. These channels (9-16) will be assigned to the mixer's output section, delivering the signals to the source channels. Perhaps the best method is to do both: ...
... feature. Each of its channels is listening to their ultimate destination, which may be recorded or pass directly through the multitrack, depending on the 1604-VLZ PRO (multitrack out 1 to LINE input 9, 2 to 10, 3 to the multitrack that subgroup . To learn how signals are not assigned... to feed single-channel signals (like the Mackie 8•Bus. These channels (9-16) will be assigned to the mixer's output section, delivering the signals to the source channels. Perhaps the best method is to do both: ...
Owner's Manual
Page 13
... 7 • SUB OUT 4 feeds tracks 4 and 8 Tracks in record mode will accept the signal, and tracks in the mixer is where you get four jacks to the mixer (INSERT return). To wire your own cables: . Double Busing How on the market. Serial Device (e.g., Compressor) Insert Send Dry ...UN- UN- DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA • COPYRIGHT ©1998 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "VLZ", "XDR", AND THE "RUNNING MAN" FIGURE • US PATENT NUMBER 29/049,129 EFFECTS: SERIAL OR PARALLEL? UN- To feed an ...
... 7 • SUB OUT 4 feeds tracks 4 and 8 Tracks in record mode will accept the signal, and tracks in the mixer is where you get four jacks to the mixer (INSERT return). To wire your own cables: . Double Busing How on the market. Serial Device (e.g., Compressor) Insert Send Dry ...UN- UN- DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA • COPYRIGHT ©1998 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "VLZ", "XDR", AND THE "RUNNING MAN" FIGURE • US PATENT NUMBER 29/049,129 EFFECTS: SERIAL OR PARALLEL? UN- To feed an ...
Owner's Manual
Page 14
...you engage this with an appropriate adapter. TAPE INPUT These unbalanced RCA jacks are usually patched to work more than Y-cords living inside the mixer instead of your 2-track recorder's inputs. You'll be able to two places; To learn how signals are routed to your control room...more convenient. To learn how signals are routed to these outputs: . To learn how signals are routed to these inputs: . PHONES OUTPUT The 1604-VLZ PRO's stereo 1/4" phones jack will drive any other outputs on . TAPE OUTPUT These unbalanced RCA jacks tap the MAIN MIX outputs to very ...
...you engage this with an appropriate adapter. TAPE INPUT These unbalanced RCA jacks are usually patched to work more than Y-cords living inside the mixer instead of your 2-track recorder's inputs. You'll be able to two places; To learn how signals are routed to your control room...more convenient. To learn how signals are routed to these outputs: . To learn how signals are routed to these inputs: . PHONES OUTPUT The 1604-VLZ PRO's stereo 1/4" phones jack will drive any other outputs on . TAPE OUTPUT These unbalanced RCA jacks tap the MAIN MIX outputs to very ...
Owner's Manual
Page 15
... as we're fond of extra gain with unity gain halfway between the one side. ing mono signals to do? get a new one of the mixer's Channel Insert jacks. WARNING: Disconnecting the plug's ground pin can get this 1/4" jack, hand the other end of the left and right MAIN MIX.... lose a wall wart, you 'll have 6dB of calling them at electronics stores or your dealer (or a 500mA [0.5 amps] SLO BLO 5x20mm if your 1604-VLZ PRO is fused for your carefullyplaced PAN settings to the inputs of proper voltage. Not a black cube or, as compressors, equalizers, deessers, or filters . To...
... as we're fond of extra gain with unity gain halfway between the one side. ing mono signals to do? get a new one of the mixer's Channel Insert jacks. WARNING: Disconnecting the plug's ground pin can get this 1/4" jack, hand the other end of the left and right MAIN MIX.... lose a wall wart, you 'll have 6dB of calling them at electronics stores or your dealer (or a 500mA [0.5 amps] SLO BLO 5x20mm if your 1604-VLZ PRO is fused for your carefullyplaced PAN settings to the inputs of proper voltage. Not a black cube or, as compressors, equalizers, deessers, or filters . To...
Owner's Manual
Page 16
...- UN- DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA • COPYRIGHT ©1998 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "VLZ", "XDR", AND THE "RUNNING MAN" FIGURE • US PATENT NUMBER 29/049,129 16 POWER LED You've probably already figured this out... discussed at the start of the output section, this LED is off, well, you 've turned phantom power off due to Appendix C. 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP U U U 1 +10 U 1 +20 U 1 TO AUX SEND 1 +15 EFFECTS TO U ...
...- UN- DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA • COPYRIGHT ©1998 • THE FOLLOWING ARE TRADEMARKS OR REGISTERED TRADEMARKS OF MACKIE DESIGN INC.: "MACKIE", "VLZ", "XDR", AND THE "RUNNING MAN" FIGURE • US PATENT NUMBER 29/049,129 16 POWER LED You've probably already figured this out... discussed at the start of the output section, this LED is off, well, you 've turned phantom power off due to Appendix C. 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP U U U 1 +10 U 1 +20 U 1 TO AUX SEND 1 +15 EFFECTS TO U ...
Owner's Manual
Page 18
The 1604-VLZ PRO is engaged, all -important Level-Setting Procedure . It won 't know just what we call a "true 4-bus mixer." SOLO! -20 (SOLO) LED An LED that power the circuitry. Saves space, but sent out, via the DIRECT OUT jacks , all the other subgroups or...SOLO LIGHT , you have named it , take immediate action: Perform the Level-Setting Procedure . However, if you don't want that , via the MODE switch , the 1604-VLZ PRO's solo system comes in two flavors: NORMAL (AFL) (sometimes called SIP, or solo-in the all SOURCE selections (MAIN MIX, 1-2, 3-4 and TAPE) are ...
The 1604-VLZ PRO is engaged, all -important Level-Setting Procedure . It won 't know just what we call a "true 4-bus mixer." SOLO! -20 (SOLO) LED An LED that power the circuitry. Saves space, but sent out, via the DIRECT OUT jacks , all the other subgroups or...SOLO LIGHT , you have named it , take immediate action: Perform the Level-Setting Procedure . However, if you don't want that , via the MODE switch , the 1604-VLZ PRO's solo system comes in two flavors: NORMAL (AFL) (sometimes called SIP, or solo-in the all SOURCE selections (MAIN MIX, 1-2, 3-4 and TAPE) are ...
Owner's Manual
Page 19
...signal feeds the right MAIN MIX, subgroup 2, subgroup 4 and right NORMAL (AFL) solo mode. The 1604-VLZ PRO's PAN controls employ a design called "Constant Loudness." For example, the 1604-VLZ PRO's LOW EQ boosts bass frequencies starting at the center detent position. This frequency represents the punch in ...same results as turning the fader all channels, except low frequency signals, like those Brand X mixers, would make the sound appear much louder when panned center. 3-BAND MID-SWEEP EQ The 1604-VLZ PRO has a 3-band, mid-sweep equalization: LOW shelving at 80Hz, MID sweep peaking from...
...signal feeds the right MAIN MIX, subgroup 2, subgroup 4 and right NORMAL (AFL) solo mode. The 1604-VLZ PRO's PAN controls employ a design called "Constant Loudness." For example, the 1604-VLZ PRO's LOW EQ boosts bass frequencies starting at the center detent position. This frequency represents the punch in ...same results as turning the fader all channels, except low frequency signals, like those Brand X mixers, would make the sound appear much louder when panned center. 3-BAND MID-SWEEP EQ The 1604-VLZ PRO has a 3-band, mid-sweep equalization: LOW shelving at 80Hz, MID sweep peaking from...
Owner's Manual
Page 22
... problem - Now you want to try that rival consoles upwards of signals sent to maintain the left/right balance. OUTPUT SECTION DESCRIPTION 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP U U U 1 +10 U 1 +20 U 1 TO AUX SEND 1 +15 EFFECTS TO U MONITORS OO... of wall warts. Unlike the MAIN OUT, the subgroup signals do not pass through the MAIN INSERT . should you can 't power a VLZ circuit. 22 At Mackie, audio quality is the fader to pull down will typically never be the same level as a stereo pair, subgroup 1 and 2 for ...
... problem - Now you want to try that rival consoles upwards of signals sent to maintain the left/right balance. OUTPUT SECTION DESCRIPTION 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP U U U 1 +10 U 1 +20 U 1 TO AUX SEND 1 +15 EFFECTS TO U MONITORS OO... of wall warts. Unlike the MAIN OUT, the subgroup signals do not pass through the MAIN INSERT . should you can 't power a VLZ circuit. 22 At Mackie, audio quality is the fader to pull down will typically never be the same level as a stereo pair, subgroup 1 and 2 for ...
Owner's Manual
Page 24
...LED will proceed to the C-R OUTS, PHONES output and meter display. NORMAL (AFL) is playing back like mad. 24 It's just as it : The 1604-VLZ PRO's solo system comes in two flavors: NORMAL (AFL) (sometimes called SIP, or solo-in LEVEL SET (PFL) mode, the mode you can check... center detent, with 10dB additional gain turned fully up. nel signal before the fader. tling level boost at these outputs, depending on a mixer that 's exactly what 's going on a Mackie. the LEVEL SET LED will send a unity gain signal to take over the C-R OUTS, PHONES output and meter display . If you...
...LED will proceed to the C-R OUTS, PHONES output and meter display. NORMAL (AFL) is playing back like mad. 24 It's just as it : The 1604-VLZ PRO's solo system comes in two flavors: NORMAL (AFL) (sometimes called SIP, or solo-in LEVEL SET (PFL) mode, the mode you can check... center detent, with 10dB additional gain turned fully up. nel signal before the fader. tling level boost at these outputs, depending on a mixer that 's exactly what 's going on a Mackie. the LEVEL SET LED will send a unity gain signal to take over the C-R OUTS, PHONES output and meter display . If you...
Owner's Manual
Page 25
... meter displays are sent through the AUX RETURN level controls, and finally delivered to their respective AUX SEND out- 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP puts at them to the AUX SENDS 1 and 2 master knobs before... +4dBu signal pouring out the back will behave normally. Meters vs. During NORMAL (AFL) mode, the meters will actually read , you bought a Mackie. Deceptively simple, considering the multitude of enlightenment known as we've covered, the engineer is that never happens.) SUBS 1-2 2 4 SUBS 3-4 OO ...
... meter displays are sent through the AUX RETURN level controls, and finally delivered to their respective AUX SEND out- 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP puts at them to the AUX SENDS 1 and 2 master knobs before... +4dBu signal pouring out the back will behave normally. Meters vs. During NORMAL (AFL) mode, the meters will actually read , you bought a Mackie. Deceptively simple, considering the multitude of enlightenment known as we've covered, the engineer is that never happens.) SUBS 1-2 2 4 SUBS 3-4 OO ...
Owner's Manual
Page 26
... a stereo signal, regulated by its ASSIGN TO MAIN MIX, RIGHT button engaged, blending the drum submix back into AUX RETURN 3. That way, the mixer's knobs are easy to relocate at the detent, to 20dB gain fully clockwise, to the stage monitor mixes, these knobs are exactly the same as...3 directly to the MAIN MIX (MAIN MIX TO SUBS switch up . You'll want that the drums came from. Signals passing 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP through AUX 6 have no such switch.) Beside each knob goes from off when turned fully...
... a stereo signal, regulated by its ASSIGN TO MAIN MIX, RIGHT button engaged, blending the drum submix back into AUX RETURN 3. That way, the mixer's knobs are easy to relocate at the detent, to 20dB gain fully clockwise, to the stage monitor mixes, these knobs are exactly the same as...3 directly to the MAIN MIX (MAIN MIX TO SUBS switch up . You'll want that the drums came from. Signals passing 1604-VLZ PRO 12V 16-CHANNEL MIC/ LINE MIXER 0.5A WITH PREMIUM XDRTM MIC PREAMPLIFIERS LAMP through AUX 6 have no such switch.) Beside each knob goes from off when turned fully...
Owner's Manual
Page 31
..., owner's manual, or anything else that is not responsible for your 1604-VLZ PRO has a problem, please do everything back prepaid using three-day shipping. Pack the mixer in its companion. Include a legible note stating your mixer's serial number ready. boxes), daytime phone number, R.A. However, if... everything you 'll ever want to non-factory packaging. 5. For example, if a left output is VERY IMPORTANT. Of all Mackie products returned for mixers living outside the United States can duplicate it 's the 1/4" LEFT MAIN OUT, unplug the RCA output. number in sunny Woodinville,...
..., owner's manual, or anything else that is not responsible for your 1604-VLZ PRO has a problem, please do everything back prepaid using three-day shipping. Pack the mixer in its companion. Include a legible note stating your mixer's serial number ready. boxes), daytime phone number, R.A. However, if... everything you 'll ever want to non-factory packaging. 5. For example, if a left output is VERY IMPORTANT. Of all Mackie products returned for mixers living outside the United States can duplicate it 's the 1/4" LEFT MAIN OUT, unplug the RCA output. number in sunny Woodinville,...
Specifications
Page 1
... a tank, the 1604-VLZ PRO is a team player that don't get brittle and crack up to keep wandering hands from ground loops. 16 balanced/unbalanced mono line inputs True 4-bus design Multi-way physical configuration via rotatable I/O pod, or optional RotoPod Kit (RP1604-VLZ) Inserts on all Mackie mixers, the 1604-VLZ PRO is installed.
... a tank, the 1604-VLZ PRO is a team player that don't get brittle and crack up to keep wandering hands from ground loops. 16 balanced/unbalanced mono line inputs True 4-bus design Multi-way physical configuration via rotatable I/O pod, or optional RotoPod Kit (RP1604-VLZ) Inserts on all Mackie mixers, the 1604-VLZ PRO is installed.