SKU: 75217649663

Headliner HL90120 R4 Professional 4-Channel Rotary DJ Mixer

$378.00 $420.00
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  • USA
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

Headliner HL90120 R4 Professional 4-Channel Rotary DJ MixerHouse music, techno, and classic funk DJs who also enjoy spinning soul and disco jams will delight in the technical prowess and sleek design of the R4 4 Channel Rotary DJ Mixer from Headliner. The versatile rotary DJ mixer features three stereo channels with selectable Line and Phono RCA inputs and one stereo channel with selectable Line and Mic inputs. All channels feature gain and peak LEDs, a three band isolator EQ, and an integrated, high current

House music, techno, and classic funk DJs who also enjoy spinning soul and disco jams will delight in the technical prowess and sleek design of the R4 4-Channel Rotary DJ Mixer from Headliner. The versatile rotary DJ mixer features three stereo channels with selectable Line and Phono RCA inputs and one stereo channel with selectable Line and Mic inputs. All channels feature gain and peak LEDs, a three-band isolator EQ, and an integrated, high-current headphone amplifier. A built-in analog filter boasts High-Pass and Low-Pass modes with frequency and resonance control and genuine ALPS potentiometers round out the many features on this feature-rich unit.

The R4 has independent Master and Booth outputs with balanced XLR and unbalanced RCA connectors for added flexibility when connecting to any sound system. There is also a headphone selector, a large channel volume control knob, and a filter activation switch with LED status indicators. Connect any type of headphones you desire via dual 1/4" and 3.5mm jacks and manipulate the headphone Cue section to control volume and to mix between Cue and Master listening modes or blend the two for executing seamless mixes from one track to another. The compact, high-quality unit features a classic look with a sturdy metal enclosure adorned with stained wood side panels.

Features
  • Three stereo channels with selectable Line and Phono RCA inputs and one channel with selectable stereo line and mono microphone 
  • Each channel features Gain control with Peak LED, 3-Band Isolator EQ, Headphones Cue selector with LED, channel volume control, and filter activation switch with LED 
  • Master channel features analog filter, headphone monitoring and output control section 
  • Analog filter features selectable High-Pass / Low-Pass Filter modes with Frequency and Resonance controls 
  • Genuine ALPS potentiometers 
  • Headphone Cue control section features headphones volume control, headphones mix control (Cue/Master), and split monitor switch 
  • High-current headphone amplifier with dual 1/4” and 3.5mm jacks 
  • Independent Master and Booth outputs with volume controls, balanced XLR outputs and unbalanced RCA outputs 
  • Additional Record output with unbalanced RCA jacks 
  • Dual LED level meters for the Master output 
  • Microphone input with level control on front panel 
  • Sturdy metal enclosure with stained wood side panels for a classic look
  • Modular internal construction for superior audio performance 
  • External split rail power supply connected via locking Mini XLR connector 
  • Push-button power switch on rear panel 

Specifications

Number of Channels
4x Stereo
Platter/Jog Wheel
No
Faders
No
Meters
Channel Meter:
2x LED
Meter Range
+20 dBu Peak/Clip
Display
No
Sample Pads
No
EQ
3x Channel EQ:
Hi
Mid
Low
Performance Controls
EQ, High-Pass Filter, Low-Pass Filter
Built-In Effects
No
Connectivity
Audio Inputs
4x Stereo 2RCA Coaxial Line Input
3x Stereo 2RCA Coaxial Phono Input
1x Combo XLR-1/4" 3-Pin Mic Input
Audio Outputs
1x 1/4" TRS Unbalanced Headphone Output
1x 1/8" / 3.5 mm TRS Unbalanced Headphone Output
1x Stereo 2RCA Coaxial Unbalanced Master Output
1x Stereo 2RCA Coaxial Unbalanced Record Output
1x Stereo 2RCA Coaxial Unbalanced Booth Output
2x XLR 3-Pin Balanced Master Output
2x XLR 3-Pin Balanced Booth Output
Phantom Power
No
USB
No
Wireless
No
Media Card Slots
No
Performance
Frequency Response
XLR Line/Mic Input:
20 Hz to 20 kHz ±0.1 dB
XLR Master Output:
20 Hz to 20 kHz ±0.5 dB
Input Level
XLR Mic:
-50 dBu (Nominal)
RCA Line:
-7.8 dBu (Nominal)
RCA Phono:
-40 dBu (at 1kHz, Nominal)
Gain/Trim Range
RCA Line Input:
-12 dB +12 dB
RCA Phono Input:
-12 dB to +12 dB
Output Level
XLR Master:
+4 dBu (Nominal, Balanced)
+20 dBu (Maximum, Balanced)
RCA Master:
-7.8 dBu (Nominal, Unbalanced)
+12 dBu (Maximum, Unbalanced)
Headphone Output Power
70 mW per Channel into 150 Ohms (Max)
I/O Impedance
XLR Mic Input:
1.2 Kilohms
RCA Line Input:
47 Kilohms
RCA Phono Input:
47 Kilohms
Load Impedance
Headphone Output:
32 Ohms (Minimum)
Crosstalk
<-65 dB
Dynamic Range
>100 dB (A Weighted)
THD+N
XLR Mic Input:
<0.1%
RCA Line Input:
<0.05%
RCA Phono Input:
<0.05%
XLR Master Output:
<0.05%
Compatibility
Included Software
No
OS Compatibility
No
Mobile App Compatible
No
Power
Power Requirements
AC/DC Power Adapter (Included)
Power Supply Output
15 VDC at 500 mA
AC Input Power
100 to 240 VAC, 50/60 Hz
AC Power I/O
1x Mini-XLR Input (Locking)
Current Consumption
500 mA
Physical
Dimensions (W x D x H)
12.2 x 12.4 x 4.2" / 310.0 x 315.0 x 106.0 mm
Weight
7.7 lb / 3.5 kg
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 75217649663

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4.5 ★★★★★
Based on 16 reviews
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Product Reviews
L
Verified Purchase
Lili
Alexandria, US
★★★★★ 5
Powerful and convenient
Color: Black, Size: L40 Ultra Gen 2
Really happy with this robot vacuum so far. The suction is strong and it picks up dust and pet hair easily. Mapping is accurate, and it cleans efficiently without missing spots. The self-emptying dock is super convenient and saves a lot of time. Mopping works well for light cleaning too.Overall, a great upgrade and definitely worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
J
Verified Purchase
jeff zhao
Natrona Heights, US
★★★★★ 5
Better Than Expected
Color: Black, Size: L40 Ultra Gen 2
Been using the Dreame L40 Ultra Gen 2 for a few days now and honestly it’s better than I expected.The suction power is strong, especially for dust, hair, and small debris. The mopping performance is also surprisingly good compared to older robot vacuums.What I like most is the automation — auto-emptying, auto mop washing, and auto drying make daily cleaning much easier.Navigation is smart and smooth, and it rarely bumps into things.The only downside is the dirty water tank needs regular cleaning, and thick carpets still clean better with a traditional vacuum.Overall, it’s a great upgrade for busy people who want to keep their home clean without spending too much time on it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
N
Verified Purchase
Neil
Birmingham, US
★★★★★ 5
The experience has been excellent
Color: Black, Size: L40 Ultra Gen 2
Just received the Dreame L40 Ultra GEN2 and my first impression is very positive! The packaging feels premium, and the setup process was quick and easy through the app. The first mapping run was surprisingly fast, and the navigation was smart without randomly bumping into things. The cleaning performance exceeded my expectations. It picked up dust and hair very well on the first run, and the mopping feature left the floors looking noticeably cleaner. The noise level is also lower than I expected, which is a nice bonus. So far, I’m really happy with my first experience using it. It already feels like it’s going to save me a lot of time on cleaning, and I’m excited to keep using it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
J
Verified Purchase
Jessi M.
Cuba, US
★★★★★ 4
Excellent robot, object avoidance needs work
Color: Black, Size: L40 Ultra Gen 2
We really enjoy this. It does a fantastic job. Pretty excellent object avoidance. Does not mop our rugs. It DOES NOT do a good job of avoiding cat poop, however. We had an incident where it mopped out floor with cat poop. Took us awhile to clean it out of the robot, get our floors clean, and get the smell out of our house. Other than that incident, we are very, very happy with it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
J
Verified Purchase
JH
Chelsea, US
★★★★★ 5
Smart, powerful, and genuinely makes daily life easier
Color: Black, Size: L40 Ultra Gen 2
I bought this robot vacuum recently and have been using it for several days now. So far, I’m really impressed. It is smart, powerful, and very convenient for daily cleaning. The biggest highlight for me is how well it avoids obstacles. It can recognize and move around things in the house automatically, so I don’t have to constantly watch it or move everything out of the way before starting a cleaning session. That makes it feel much more worry-free compared with other cleaning tools. The suction power is also very strong. For everyday floor cleaning, I honestly feel like it does an excellent job, even compared with my Dyson handheld vacuum. It picks up dust and debris well, and the cleaning result has been very satisfying. Another feature I really appreciate is the scheduling. I can set it to clean automatically every day, and it just takes care of the floors by itself. This has saved a lot of time and effort for both me and my wife. After using it, I feel like a good robot vacuum is almost as important as a dishwasher. It reduces a lot of daily housework and gives us more time to focus on work, hobbies, entertainment, and family life. It has quickly become a useful companion in our home. I have only used it for several days, so I can’t speak to long-term durability yet, but my first impression is very positive. If you are looking for a smart, powerful, and hands-free cleaning helper, I would definitely recommend this robot vacuum.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026

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