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SKU: OX
The Universal Audio OX Amp Top Box is a cutting-edge unit, allowing you to get the sweetest tones from your tube amplifiers but at ear-friendly volumes. Essentially an amp load box and attenuator, this amazing piece of gear goes one step further - in typical Universal Audio fashion!
With many sophisticated features such as dynamic speaker modelling and cabinet emulation, the OX also has a dedicated app to let you really fine-tune your tones. Old-school circuitry meets modern flexibility when it comes to the OX, with UA's boutique analogue quality ensuring that none of your base tone is hindered by digital processing, but rather embellished by the convincing modelling technology.
Key Features
- Get the ultimate tone out of your tube amp — anywhere, and at any volume
- Pair your amp to the world's best reactive load, with boutique UA analog quality — built for years of home and studio use
- Instantly audition dozens of album-quality mic and guitar cabinet setups with front panel "Rig" control
- Get authentic "edge of destruction" tones complete with speaker breakup and cone cry, thanks to UA Dynamic Speaker Modeling
- Premium, no-compromise analog reactive load box for tube guitar amps
- Five finely-tuned guitar amp attenuation levels — from off, to whisper quiet, to full band volume
- Front-panel “Rig” control for instant, album-quality mic and speaker cabinet emulations
- UA Dynamic Speaker Modeling emulates speaker breakup and cone cry
- World-class Universal Audio EQ, compression, delay, and reverb effects built-in
- Selectable 4, 8, and 16-Ohm operation
- Front-panel Headphone out for silent practice with cranked tones
- Balanced TRS line outs, and S/PDIF digital outputs for stereo recording
- Pair with OX mobile or desktop app over Wi-Fi for editing and saving presets
- Speaker cables not included
Get The Most Out Of Your Amp - At Any Volume!
Nothing beats the sound of a real, genuine tube amplifier, but they only sound their absolute best when they're cranked. This is usually fine in most live situations, but if you're playing at home and want all of the tonal goodness from your super-loud Plexi or big Fender combo at a lower volume, it's not achievable. But that's where the OX Top Box comes in...
By plugging your amplifier into the OX, the unit ensures that it is safely loaded, to prevent any damage from occurring without the cabinet. A speaker cabinet can of course be used in conjunction with the OX, and with selectable 4, 8, and 16-Ohm operation, most amplifiers will be compatible.
The main function of the OX though is its attenuation and modelling capabilities. By attenuating your amplifier, this means that you can turn up the master volume so that all of the rich, harmonic content is brought out for the ultimate tone. Then, you can use the OX's own volume control to monitor the overall output, giving you your favourite amp sound at any volume!
This not only makes the OX Top Box an incredible tool for home use, but also for studio recording. And with balanced TRS line outs and S/PDIF digital outputs, you can record directly into an interface or mixing desk, and even send the signal directly to front-of-house in stereo for a fuller sound when playing live. It's that flexible!
Speaker & Cabinet Emulation
UA are renowned for their incredible plug-ins for DAWs, and they've integrated their convincing modelling technology into the OX. Fully accessible via the free OX app, you can choose from multiple speaker and cabinet models, with the former capable of emulating speaker breakup and cone cry for the most genuine tones conceivable.
The cabinet models are also very detailed and accurately matched to their real-life counterparts, letting you find the best pairing for your amplifier. This is another great feature that makes the OX perfect for studio use, as you can easily experiment with your setup to find the optimal tone on-the-fly.
And it doesn't end there, as the OX also boasts mic emulations, with the app letting you even adjust its placement on the simulated cabinets/speakers. And top-quality EQ, compression, delay, and reverb effects are also built into the OX, giving you some essential effects to play around with!
Included in the box
- OX Amp Top Box Unit
- External Power Supply
- IEC Power Cable — US, EU, or UK (region dependent)
- Quick Start Guide
- RIG Control Presets
- Safety & License Sheet
Technical Specifications
I/O Complement
- Amplifier Input: One
- Speaker Output One
- Line Outputs: Two (one stereo left/right)
- Headphone Output: One (stereo left/right)
- Digital Outputs: Two (mirrored)
Amplifier Input
- Connector Type: ¼” Female TS Unbalanced
- Input Impedance: 4/8/16 Ohms (selectable)
- Maximum Input Power: 150 Watts RMS, 200 Watts peak
- Safety Load (power off): 16 Ohms
Speaker Output
- Connector Type: ¼” Female TS Unbalanced
- Output Attenuation: Five Attenuation Steps and Speaker Off
- Output Latency: None (pure analog)
Line Outputs 1 – 2
- Connector Type: ¼” Female TRS Balanced
- Dynamic Range: 114.5 dB (A-weighted)
- Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
- Signal-to-Noise Ratio: 114.0 dB (A-weighted)
- Total Harmonic Distortion + Noise: -110 dB @ -3 dBFS
- Channel Separation: 129 dB
- Output Impedance: 100 Ohms
- Maximum Output Level: 20.2 dBu (balanced)
- Output Latency: 2.77 milliseconds (122 samples @ 44.1 kHz)
Stereo Headphone Outputs
- Connector Type: ¼” Female TRS Stereo
- Dynamic Range: 113.0 dB (A-weighted)
- Frequency Response: 20 Hz – 20 kHz, ±0.1 dB
- Signal-to-Noise Ratio: 113.0 dB (A-weighted)
- Total Harmonic Distortion + Noise: -107 dB @ -3 dBFS
- Maximum Output Power: 80 milliwatts into 600 Ohms
- Output Latency: 2.77 milliseconds (122 samples @ 44.1 kHz)
Digital Outputs
- Format: S/PDIF IEC958
- Connector Type 1: Female Phono (RCA)
- Connector Type 2: Optical TOSLINK JIS F05
- Sample Rate & Bit Depth: 44.1 kHz, 24-bit
- Output Latency: 2.57 milliseconds (113 samples @ 44.1 kHz)
Electrical
- Power Supply: External AC to DC Power Supply, Level VI compliant
- AC Input Connector Type: IEC Male
- AC Requirements: 100V – 240V AC, 50 – 60 Hz
- DC Connector Type: XLR 4-Pin Locking Male (Neutrik P/N NC4MDM3-H)
- DC Requirements: 12 VDC ±5%, 1.5A
- Maximum Power Consumption: 18 Watts
- Operating Temperature Range: 32° to 104° Fahrenheit (0° to 40° Celsius)
- Storage Temperature Range: –40° to 176° Fahrenheit (–40° to 80° Celsius)
- Operating Humidity Range: 10% – 95%, non-condensing
Dimensions
- Width 15.01 in / 381.25 mm
- Height, Chassis Only 4.45 in / 112.94 mm
- Height, Including Rubber Feet 5.45 in / 138.44 mm
- Depth, Chassis Only 8.05 in / 204.5 mm
- Depth, Including Knob & Jack Protrusions 9.04 in / 229.58 mm
- Weight (unit only) 14.1 Lbs / 6.40 kg
Customer Reviews
Mr David Cronin17th Dec 2023
Mr. Bruce Mason11th Feb 2023
Dr H24th Dec 2022
Mr Gary McTeggart7th Jun 2022
M F Box21st Sep 2021
Mr. Edward Fermor16th Sep 2021
Mr Samuel Jordan28th Aug 2021
Mr Michael Michael21st Jul 2021
Mr Eduardo Gonzalez2nd Jun 2021
Clive Kay13th Mar 2021
Finance Options
Select deposit amount
0% = £0.00
Total amount payable £0.00. APR representative. Finance is subject to status. Terms and conditions apply.
- Total Cash Price
- £0.00
- Deposit
- £0.00
- Amount of Credit
- £0.00
- Duration of Agreement
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- 0 Monthly Repayments
- £0.00
- Cost of Credit
- £0.00
- APR Representative
- 0%
- Annual Rate of Interest (Fixed)
- 0%
- Settlement Fee
- £0.00
- Total Amount Payable
£0.00
How do I use instant finance?
It's simple! Just add the products you want to your basket and click the "Checkout" button in your basket. Go through the checkout process and tick the "Finance" option under "Select Your Payment Method". You can then choose which finance term you'd like to apply for, and change your deposit if you wish.
At the end of the checkout you'll be taken to the V12 Finance web site. This is where your finance application is processed. Assuming your application is accepted you'll be able to place your deposit and confirm your order right there.
Then, your order will come through to Andertons and we'll send you the goods. Get approval before 3pm and we'll send your order out the same working day (stock permitting) for next working day delivery!
Who can apply for finance?
You must: spend over £300, be at least 18 years of age, have been a UK resident for 3 years or more, be able to make repayments by Direct Debit, be in regular employment (minimum of 16 hours per week) including self-employment, or in permanent residence with your partner who is in regular employment.
Read More About Online FinanceAndertons Music Company's Registered Office: 58-59 Woodbridge Road, Guildford, GU1 4RF. Andertons Music Company acts as a credit broker and not a lender and only offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Andertons Music Company is authorised and regulated by the Financial Conduct Authority, firm registration number 716155. Credit provided subject to age and status.