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Cranborne Audio 500R8 8-slot 500 Series & Chassis USB Audio Interface Certified Open Box , $1,619.10 - Add to Cart Skip to Product Information

Cranborne Audio 500R8 8-slot 500 Series & Chassis USB Audio Interface Certified Open Box

USB Audio Interface, 28-in/30-out with 8 500 Series Slots, Monitor Control, Cue Mixer, ADAT and MIDI I/O, and Analog Summing
Item ID: CA500R8d1
Cranborne Audio 500R8 8-slot 500 Series & Chassis USB Audio Interface

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Cranborne Audio 500R8 8-slot 500 Series & Chassis USB Audio Interface Certified Open Box

Certified Open Box Savings!

Save $179.90 What is Certified Open Box?

The price below reflects your savings.

Savings: $179.90 New for $1,799.00

Studio in a Rack

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Our Product Research Team

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The Cranborne Audio 500R8 is, essentially, a studio in a rack. It’s an 8-slot high-current 500 Series chassis, a 28-in/30-out USB interface, an analog summing mixer, a zero-latency artist mixer, and a monitor controller — everything you need to build your dream hybrid analog/digital studio. The 500R8 is fitted with high-performance AD/DA conversion, reference-grade headphone amplifiers, a reference-quality master clock, and more. In fact, there’s very little you can’t do with the Cranborne Audio 500R8. Configure it to suit your preferred analog flavoring for any source. Pack it with vintage-style 500 Series preamps for recording drums; clean, pristine preamps for vocals; and EQ, compression, and saturation modules when it’s time for mixdown.

USB audio interface

Connect the 500R8 directly to your Mac or PC via USB, and utilize the 500R8’s onboard 28-in/30-out USB audio interface for recording and playback directly to and from your digital audio workstation of choice.

Discrete summing mixer

Give your mix the crowning touch of analog character by sending submixes and stems back through your 500 Series modules, into the 500R8’s discrete analog summing mixer, and back into your DAW.

Monitor controller

Use the 500R8’s onboard high-headroom monitor controller to switch between two sets of speakers, toggle mono sum, mute, dim, and talkback functions while monitoring the peak level of your mix on the high-resolution 28-segment LED meter.

Shown with optional 500 Series modules

Audiophile headphone amps and zero-latency artist mixer

Drive any headphones with 500R8’s two reference-grade headphone amplifiers. They have enough power to drive low-impedance headphones with gobs of headroom and a linear frequency response to below 1Hz! Use the 500R8’s two aux buses to create pristine analog cue mixes that you can blend with DAW playback and send to the talent with zero latency.

World-class conversion and clocking

For the musician who wants to get down to business, it may be hard to get excited about conversion and clocking. But engineers at Sweetwater get to check out the best of them — and we’re amped about these converters. They’re touted as best in class and flaunt truly impressive specs, such as less than 0.5 picoseconds of jitter. But none of that really matters when you hear the fullness of your stereo image bloom with jaw-dropping sonic clarity.

Connect the 500R8 to your macOS or Windows computer and capture every nuance of your sources with reference-grade AD/DA conversion and world-class internal clocking. Effortlessly pass audio between analog and digital worlds without the digital artifacts that color, cloud, and degrade your recordings. The only coloration you will hear is intentional — your microphone placements, mixing decisions, and the 500 Series modules you’ve chosen to use. And with word clock I/O, you can even share the 500R8’s world-class clocking with the rest of your digital gear.

Ample I/O and configurable front end

The 500R8 has generous I/O to integrate with all of your analog and digital hardware, so you can mix and match your 500 Series modules and find the best combinations during recording and mixing to help create your own signature analog sound. You can even integrate your 19-inch rack units via the 500R8’s dedicated per-slot TRS insert jacks.

C.A.S.T. away

Spec’d with Cranborne’s innovative C.A.S.T. system, the 500R8 does away with excess cable spaghetti, delivering a cost-effective, low-maintenance, plug-and-play solution by transmitting four channels of balanced analog audio over shielded Cat 5 Ethernet cable directly to the destination of your choice.

Handy source select

Repatch your 500R8 at a flick of a switch. Dedicated source select switches for each 500 Series slot adjusts signal routing to send analog, C.A.S.T., or USB sources through each of your modules. Unused 500 Series slots? Bypass them using the 500R8’s dedicated slot-bypass switch.

Shown with optional modules and Cranborne 500ADAT

Expandable — in the studio or on the road

When you’re ready for additional 500 Series connectivity, connect your 500R8 with Cranborne Audio’s 500ADAT via ADAT for 16 channels of 500 Series modules. Housed in a 19-inch 4U rackmountable rugged steel frame, the 500R8 makes an ideal 500 Series chassis for mobile recording setups. Packed with cool, useful features, the Cranborne Audio 500R8 is one of the more innovative pieces of pro audio gear we’ve seen at Sweetwater. Trust us — you will be impressed.

Cranborne Audio 500R8 500 Series Chassis and USB Audio Interface Features:

  • 28-in/30-out USB interface, summing mixer, artist mixer, and monitor controller
  • C.A.S.T. ports per channel for routing analog I/O using passive or active C.A.S.T. breakout boxes via standard Cat 5 cable
  • 24-volt, 5A external locking power supply for improved analog audio performance and heat dissipation
  • Each 500R8 is extensively tested by a team of dedicated engineers to ensure reliability and consistency
  • Low-latency USB 2.0 interface:
  • Compatible with macOS and Windows computers
  • ADAT I/O (16x16 channels @ 44.1/48kHz, 8x8 channels @ 88.2/96kHz)
  • S/PDIF I/O; 5-pin MIDI I/O
  • High-performance A/D conversion:
  • Dynamic range: 121dB A-weighted dynamic range, 20Hz–20kHz
  • Frequency response: 2.2Hz to >80kHz (-1dB)
  • THD+N: <0.00032% (-110dB) @ -4dBFS, 20Hz–40kHz (1kHz, A-weighted)
  • Max input level: +24dBu
  • High-performance D/A conversion:
  • Dynamic range: 121dB A-weighted, 20Hz–20kHz
  • Frequency response: <1Hz to >61kHz (-1dB)
  • THD+N: <0.0003% (-110.5dB) @ -4dBFS, 20Hz–40kHz (1kHz, A-weighted)
  • Max Output Level: +24dBu
  • Reference-quality internal master clock:
  • Sample rates: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, and 192kHz; <0.5ps jitter
  • Dedicated word clock I/O via BNC
  • External sync options using word clock BNC, S/PDIF, or ADAT
  • Monitor controller with talkback:
  • Speaker A/B switching, mono check, dim, mute, and 28-segment peak meter
  • Dedicated talkback input with phantom power, push-to-talk activation, and automatic routing to all headphone and C.A.S.T. facilities
  • Illuminated front-panel controls for all monitor controller functions
  • Analog summing mixer:
  • 8x2 analog summing mixer with +26.5dBu of headroom and dedicated ADC
  • Balanced 1/4-inch jack outputs
  • C.A.S.T. link port for increasing summing mixer to 16x2 using Cranborne Audio’s 500ADAT
  • Zero-latency artist mixer:
  • Analog artist mixer with per-channel physical level/pan controls and DAW return blend controls
  • 2 high-power headphone outputs with independent blend and level controls
  • Reference-grade headphone amplifier:
  • THD+N: <0.0006% (-104.4dB) @ 20dBu, 1kHz A-weighted, 300-ohm load
  • Output wattage (1kHz): 250mW x 2 @ 600 ohms, 650mW x 2 @ 220 ohms, 1.21W x 2 @ 100 ohms, 500mW x 2 @ 32 ohms
  • Frequency Response: <1Hz to >70kHz (1dB)
  • High-current 8-slot 500 Series rack:
  • Per-slot current: 250mA , 2A total for all slots
  • XLR inputs, XLR line outputs, and TRS inserts (pre-ADC) per 500 Series slot
  • Module source switching options to send analog, USB or external C.A.S.T. signals through 500 Series modules
  • Per-slot module bypass switches allowing 500R8 to be used without 500 Series modules installed
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
  • Fix it the first time with our award-winning, factory-certified Service Department
Learn More about Total Confidence Coverage

Offer applies only to single-receipt qualifying purchases. Select manufacturers may require that only the manufacturer’s products qualify towards the minimum purchase amount needed to be eligible for promotional financing. Otherwise, an invoice that meets the minimum purchase amount and contains at least one qualifying manufacturer product is eligible for promotional financing. No interest will be charged on promo purchase balance, and equal monthly payments are required on promo purchase until it is paid in full. The payments equal the amount financed divided by the number of months in the promo period, rounded up to the next whole dollar. These payments may be higher than the payments that would be required if this purchase was a non-promo purchase. During the last month(s) of the promo period the required monthly payment may be reduced due to the prior months’ rounding. Regular account terms apply to non-promo purchases. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

Offer applies only to single-receipt qualifying purchases. No interest will be charged on the promo balance if you pay it off, in full, within the promo period. If you do not, interest will be charged on the promo balance from the purchase date. The required minimum monthly payments may or may not pay off the promo balance before the end of the promo period, depending on purchase amount, promo length and payment allocation. Regular account terms apply to non-promo purchases and, after promo period ends, to the promo balance. New Accounts as of 07/31/2025: Purchase APR is 34.99%. Penalty APR is 39.99%. Min Interest Charge is $2. Existing cardholders: See your credit card agreement terms. Subject to credit approval.

The estimated required monthly payment shown which excludes taxes and delivery equals the amount financed divided by the number of months in the promo period, rounded up to the next cent. During the last month(s) of the promo period the required monthly payment may be reduced due to this rounding. These payments apply only with the financing offer shown. If you make these payments by the due date each month, you should pay off this amount financed within the promo period, if it is the only balance you are paying off. If you have other balances on your account, this payment will be added to any other minimum monthly payments.

Applies only to select items from this manufacturer. Ask your Sweetwater Sales Engineer for more details.