Eight inputs sounds like headroom. It also sounds like overkill if you're running three sources into two displays. The AMX PR01-0808 Precis 8x8+4 4K60 HDMI Matrix Switcher is a fixed-configuration unit — you're buying exactly this port count, no expansion, no scaling down. So the first question isn't whether the B-Stock price is good (it is). The first question is whether the routing math fits your room.

The B-Stock unit is $7,992.00 — $1,998 under the $9,990 new MAP. That's a real number, and it's worth spending five minutes with your input list before writing the PO.

View the AMX PR01-0808 Precis 8x8+4 4K60 HDMI Matrix Switcher Product Page

What "8x8+4" Actually Means in a Real Install

The PR01-0808 gives you eight HDMI inputs and eight HDMI outputs. Four of those eight outputs are also mirrored as HDBaseT outputs — that's the "+4" in the name. HDBaseT runs over a single Cat6/Cat6A cable at distances up to 262 ft (80m) for full 4K, or up to 328 ft (100m) for 1080p and below. If you have displays that aren't rack-adjacent — a screen in a back-of-room position, a confidence monitor at FOH, a display in an adjacent breakout — those four HDBaseT ports handle the cable run without a separate balun on the output side.

The eight HDMI outputs handle shorter runs: direct to displays, to a local confidence monitor, to a capture card. The routing is fully flexible — any input to any output, simultaneously.

Sizing the Input Count: A Practical Framework

Eight inputs is a lot for a single-room install. It's reasonable for a multi-room hub, a training facility, or anywhere sources accumulate over time. Here's how we'd think through it:

• Count your current sources honestly. Laptop, desktop, Blu-ray/media player, streaming device, camera output, graphics workstation, video conferencing codec, document camera — list them. Most rooms top out at four to six when you get specific.
• Add one or two for growth. A matrix switcher that's full on day one is a problem by year two. Two spare inputs is reasonable; four is generous unless you know the expansion is coming.
• Count outputs the same way. Main display, secondary display, recording feed, confidence monitor, overflow room. If you're at or near eight outputs, the routing math justifies this unit. If you're at three, it probably doesn't — and no B-Stock discount changes that.

If your honest count puts you at five inputs and four outputs, a smaller matrix is a better fit. If you're at six inputs today with a known expansion in the next 12 months, eight inputs starts to look like planning rather than padding.

The Signal Quality Case for This Unit

Where the PR01-0808 earns its price — at new or B-Stock — is signal fidelity. This isn't a budget matrix doing 4K in name only:

• 4K60 at 4:4:4 full chroma — no subsampling, no color information dropped in the handoff. Every output receives the same full-resolution signal the source sends.
• HDR support — passes HDR metadata intact so HDR-capable displays actually receive and render it correctly.
• HDMI 2.0 and HDCP 2.2 — handles protected content from streaming devices, Blu-ray, and any HDCP 2.2 source without handshake failures.
• Audio de-embed — pull the audio off an HDMI input independently, route it to a separate audio system. Useful any time you're not running sound through the display itself.

For a studio or production environment, 4K60 4:4:4 matters most when you're feeding a color-accurate reference monitor, a camera return display, or any screen where color decisions are being made. A matrix that subsamples in the chain introduces error you can't see until you're looking at the wrong thing.

Fixed Configuration: What You're Committing To

The PR01-0808 is a fixed-configuration matrix — not modular, not expandable. You get exactly eight inputs and eight outputs (four of which mirror to HDBaseT). That's the architecture, full stop.

That's a meaningful constraint. It means this unit is right-sized for rooms that are designed now and expected to stay roughly the same size. If you're building out a hub that might grow to 16 inputs in 18 months, a modular or expandable platform is a better long-term call regardless of today's price.

But for a training room, a production studio, a multi-display editing suite, or a conference room that genuinely runs six to eight sources — fixed configuration is actually a feature. Fewer failure points, simpler firmware, no card-slot compatibility questions.

B-Stock at $7,992: What to Check

B-Stock on a unit like this typically means a cosmetic blemish — a scuff on the chassis, a minor mark on the rear panel — that doesn't affect signal routing, switching performance, or long-term reliability. The electronics are the same. The ports are the same. The firmware is the same.

Before purchase, check the listing photos for the specific noted blemish. For a rack-mounted unit that lives in an equipment bay, cosmetic condition on the chassis is genuinely irrelevant to how it performs. If the blemish is on a port housing or front-panel control area, look more carefully — but most B-Stock returns on pro AV gear at this tier are exactly what they sound like: a unit that didn't meet cosmetic standards for new-in-box, not a unit with an underlying problem.

$1,998 in savings on a $9,990 unit is roughly 20% off. For a piece of infrastructure that's expected to run for years with no planned replacement cycle, that's a meaningful number.

Who Should Buy This Unit

Buy the AMX PR01-0808 B-Stock if:

• You have six or more sources today, or a credible near-term plan to get there
• You need at least one or two long cable runs that benefit from the HDBaseT outputs
• 4K60 4:4:4 signal integrity matters for your displays or your production workflow
• You're budgeting for a fixed install, not a modular system you'll expand significantly

Skip it if your real source count is four or fewer, if you don't need the HDBaseT distance capability, or if there's a chance you'll need more than eight inputs within the next two years. A unit that's oversized today doesn't become right-sized later — it just becomes a matrix with unused ports and a price tag that's harder to justify in hindsight.

View the AMX PR01-0808 Precis 8x8+4 4K60 HDMI Matrix Switcher Product Page

Frequently Asked Questions

What does the "+4" mean in the 8x8+4 designation?

Four of the eight outputs include a mirrored HDBaseT output alongside the HDMI output. HDBaseT lets you run a single Cat6 or Cat6A cable up to 262 ft (80m) for a full 4K signal, or up to 328 ft (100m) for 1080p. Those four HDBaseT ports are mirrors of four of the HDMI outputs — they aren't four additional independent outputs, but they do allow you to drive a display at distance without adding separate baluns or HDBaseT transmitters at the output end.

Does the B-Stock unit carry the same warranty as a new PR01-0808?

B-Stock units are sold as-is with the condition noted in the listing. Check the specific listing for warranty terms before purchase — coverage on B-Stock AMX units can vary. If warranty continuity is critical to your procurement process, that's worth confirming before the order goes through.

Is 4K60 4:4:4 actually meaningful for a conference room or training space, or is it a spec that only matters in production environments?

For most conference rooms, 4:4:4 full chroma is genuinely not the deciding factor — 4K60 at 4:2:0 looks fine on a presentation display. Where it matters is when a display is being used for color-accurate work: a reference monitor in a grading or editing suite, a camera return in a production space, or any screen where color decisions are being made. If your use case is slide decks and video calls, you likely won't see the difference. If it's color-critical work, you will.

Can the PR01-0808 be controlled by a third-party control system, or does it require AMX hardware?

The PR01-0808 is designed to integrate with AMX control systems, but it also supports standard control protocols. For integration specifics — IP control, RS-232, API availability — consult the AMX datasheet or contact us before finalizing your control architecture. It's worth confirming compatibility with your existing control platform before the unit ships.