Skip to content
Return Policy

We have a 15-day Return Policy

Give Us A Call

(888) 282-1350

Email Us

sales@buydirectny.com

https://media.sweetwater.com/m/products/image/3181e4ee2dgrOdaFETQPa2RTRQRBeATKAsZEMiqu.png?quality=82&width=1080&height=1080&fit=bounds&canvas=1080%2C1080&ha=3181e4ee2db85637

Purchase Orders & Tax-Exempt

We proudly support schools, universities, government agencies, and qualified businesses.

  • Tax-Exempt Sales for Eligible Organizations
  • W-9 Available Upon Request

Union Audio four.valve Signature Series 4-channel Analog Rotary DJ Mixer

SKU UA-2VS-230
Save 7% Save 7%
$2,999.00
$2,999.00 - $2,999.00
$2,999.00
$2,799.00
$2,799.00 - $2,799.00
$2,799.00

The four‑valve Signature Series mixer delivers premium analog sound with precise rotary controls for each channel. Its robust aluminum chassis ensures durability for demanding gig environments. Built‑in EQ and dedicated filter sections give DJs nuanced tone shaping on the fly. The layout is intuitive, allowing seamless transitions and creative mixes.

Key Features

  • Visionary Signature Series engineering brings a slew of enhancements to celebrated two.valve and four.valve mixers for unrivaled tube-driven performance and premium panache
  • Upgraded RIAA input stages augment output quality and signal-preservation properties
  • Per-channel VCAs operate in parallel to drastically minimize distortion and enhance the depth and detail of a more-sophisticated dynamic range
  • MUSES01 op-amps replace previous-series op-amps for comprehensive improvements to summing capabilities
  • Meticulously damped rotary-faders bring the indelible smoothness and precision-focused operations of Union Audio’s flagship orbit.6 mixer to the two.valve and four.valve form factor
  • Aluminum bezels, bronze metallic faceplate, and wood side-cheeks amplify structural resilience and performance reliability with equal aplomb
  • Linear mix.R Power unit supplies audiophile-grade fidelity and power-regulating stability via hybrid discrete-voltage regulation and a high-efficiency toroidal transformer
  • Robust rotary faders guarantee ultra-detailed control and satisfying tactility
  • Interface layout features a DJ-focused design for intuitive use and ergonomic navigation
  • Master 3-band Isolator lets you expand your aural engagement for elevated mixing and transitions
  • Per-channel 3-band EQ and HPF support precise mixing and versatile sonic contouring
  • Variable channel assignments and Line/Phono operation provide flexible functionality with all your favorite audio media
  • Multimode stereo Aux send/insert/return capabilities allow for extensive interoperative integration with external software and hardware, alongside per-channel level controls
  • Innofader crossfader features adjustable crossfading profile for expanded control and personalized DJing
  • Split-mixing function is complemented by Master, Booth, and Phones level controls for flexible playback and performance configurations
  • Dedicated VU meters supply detailed real-time feedback for seamless mixing and blending
💳 Finance This Purchase
Powered by First Citizens Bank Equipment Finance
→

Subject to credit approval. Min. $5,000 financed. 2+ yrs in business. 600+ FICO required.

STEP 1

Product Selection

STEP 2

Contact Information

STEP 3

Review Information

Union Audio four.valve Signature Series 4-channel Analog Rotary DJ Mixer

Enter the details below to request your custom quote in just a few minutes

Our Customers & Partners

Features

Union Audio’s original two.valve and four.valve rotary mixers debuted to critical acclaim and were lauded for their premium craftsmanship and detailed playback. Marrying the historic roots of the Studio 54 and Paradise Garage era with visionary engineering and modern musicality, the Signature Series two.valve and four.valve mixers feature true-analog rotary mixing in 2- and 4-channel varieties, supercharging the aural aperture of Standard Series predecessors with a slew of upgrades. Sweetwater’s sound scholars are simply stunned by the across-the-board audiovisual elevation. Spanning RIAA input stages, VCA enhancements, MUSES01 op-amps, flagship-grade faders, and Union Audio’s beloved mix.R Power unit, the Signature Series packs audiophile-tier fidelity into an evolved yet out-of-time chassis, complete with genuine wood side-cheeks, aluminum bezels, and a premier bronze-metallic faceplate. From clubs to listening lounges to your personal sonic sanctuary, the Union Audio Signature Series two.valve and four.valve mixers invoke everything to love about the previous iterations’ true-analog architecture and ultra-detailed rotary interfacing, with a refined, upgraded performance palette of uncompromising hi-fi clarity.

Related Videos: four.valve Signature Series 4-channel Analog Rotary DJ Mixer

Signature Series sonics: step-ups from Standard

In Union Audio’s bid to continue pushing the boundaries of modern analog-playback possibilities and fidelity, the two.valve and four.valve Signature Series rotary mixers feature a suite of additions and improvements to up the audial ante of analog tube-powered performance. Every channel of the Signature Series overhauls the RIAA input stages, while per-channel VCAs are engineered to run in parallel operation, resulting in an expansive yet focused dynamic range with a sizable reduction in distortion. Thanks to the flexible I/O’s inclusion of 1/4-inch and 3-pin XLR connectors, alongside Aux Return, Insert, and Output pairs, as well as Master, Record, and Booth outs, precise and clear summing is essential — the Signature Series’ use of MUSES01 op-amps supplies these improvements in spades. Suffice it to say, when it comes to playback, Union Audio’s spared no effort to conjure the harmonic-rich, polychromic depth of its per-channel tube circuitry.

Elevated interfacing: a superlative exercise in form and function

With their ultra-reliable performance and a durability-focused design, Union Audio’s two.valve and four.valve Signature Series mixers are built to show, too, not just tell. Wood side paneling, aluminum bezels, and a bronze faceplate pay homage to the hi-fi heritage that inspires the sum offering of Union Audio’s sound-design ethos, simultaneously increasing the strength and style of each mixer’s showing. What’s more, each channel’s rotary faders have been methodically damped, matching the resolution, precision, and smoothly satisfying tactility of the company’s flagship orbit.6 model.

Across its ergonomic and intuitive interface, each channel features a dedicated 3-band EQ and highpass filter alongside masterfully weighted rotary faders, ensuring hyper-precise sonic contouring. Extensive options for interoperative integration abound; each channel features selectable Line/Phono input modes, variable channel assignment, and stereo Aux inserts, the last of which enables boundless integration of external hardware or software effects, drums, processing, and more. Each Signature Series mixer’s 3-band Master Isolator is your gateway to crafting hypnotizing transitions and malleable mixing. At the same time, the Innofader-designed crossfader has an adjustable contour, allowing you to tailor your DJing to suit your style. Left- and Right-channel VU meters are complemented by Split-mixing capabilities, with flexible connectivity options that culminate in a sonic landscape of indelible analog character and unwavering fidelity.

Premium voltage with mix.R Power

For all the cutting-edge sonic circuitry and tube-fueled musicality of the Signature Series two.valve and four.valve mixers, Union Audio understands that these details only excel as much as your mixer’s power-supply unit can support them. This is where the Union Audio mix.R Power unit enters the fray. This premium, linear PSU was painstakingly engineered to galvanize both the fidelity and playback of your mixer, employing a hybrid discrete-voltage regulator alongside a toroidal transformer. The former reinforces the exceptional noise-reduction and distortion-minimizing possibilities afforded by clean and consistent power, while the latter’s high-efficiency operations drastically dilute hum or noise, stabilizing power along the way. Taken altogether, the mix.R Power unit elucidates the best possible performances from your mixer via pure, detailed sound reproduction and unmatched, immersive sonic depth.

Union Audio four.valve Signature Series Features:

  • Visionary Signature Series engineering brings a slew of enhancements to celebrated two.valve and four.valve mixers for unrivaled tube-driven performance and premium panache
  • Upgraded RIAA input stages augment output quality and signal-preservation properties
  • Per-channel VCAs operate in parallel to drastically minimize distortion and enhance the depth and detail of a more-sophisticated dynamic range
  • MUSES01 op-amps replace previous-series op-amps for comprehensive improvements to summing capabilities
  • Meticulously damped rotary-faders bring the indelible smoothness and precision-focused operations of Union Audio’s flagship orbit.6 mixer to the two.valve and four.valve form factor
  • Aluminum bezels, bronze metallic faceplate, and wood side-cheeks amplify structural resilience and performance reliability with equal aplomb
  • Linear mix.R Power unit supplies audiophile-grade fidelity and power-regulating stability via hybrid discrete-voltage regulation and a high-efficiency toroidal transformer
  • Robust rotary faders guarantee ultra-detailed control and satisfying tactility
  • Interface layout features a DJ-focused design for intuitive use and ergonomic navigation
  • Master 3-band Isolator lets you expand your aural engagement for elevated mixing and transitions
  • Per-channel 3-band EQ and HPF support precise mixing and versatile sonic contouring
  • Variable channel assignments and Line/Phono operation provide flexible functionality with all your favorite audio media
  • Multimode stereo Aux send/insert/return capabilities allow for extensive interoperative integration with external software and hardware, alongside per-channel level controls
  • Innofader crossfader features adjustable crossfading profile for expanded control and personalized DJing
  • Split-mixing function is complemented by Master, Booth, and Phones level controls for flexible playback and performance configurations
  • Dedicated VU meters supply detailed real-time feedback for seamless mixing and blending

Item Includes

  •   Union Audio four.valve Signature Series 4-channel Analog Rotary DJ Mixer

Item Includes

  • Channels:4-channel
  • Screen :2 x VU Output Meters (left, right)
  • Analog Inputs:2 x XLR (mic 1,2), 4 x Dual RCA Stereo (line), 4 x Dual RCA Stereo (RIAA)
  • Analog Outputs:2 x XLR (master: L, R), 2 x 1/4" TRS (booth), 2 x 1/4" TRS (aux), 1 x Dual RCA Stereo (record)
  • Headphones:1 x 1/4" TRS (front)
  • Other I/O:2 x 1/4" Aux Return/Insert
  • Faders:4 x Rotary Knobs
  • Crossfader:Stanard
  • EQs:3-band Isolator
  • Power Source:18V DC Power Adapter (included)
  • Height:7.6"
  • Width:13.8"
  • Depth:11.1"
  • Weight:10.5 lbs
  • Manufacturer Part Number:UA-4VS-BK-115


WhatsApp