Bose S1 Pro vs BassBoss Diamon-RP-EG: Which PA Speaker Makes Sense for Your Office?

The comparison: Bose S1 Pro vs BassBoss Diamon-RP-EG

Full disclosure: I'm not an audio engineer. I'm the office administrator who signs the PO and then lives with the decision. When we needed a portable PA speaker for town halls, training sessions, and the occasional parking-lot all-hands, I spent two weeks comparing two very different approaches: the Bose S1 Pro and the BassBoss Diamon-RP-EG passive loudspeaker.

If you've searched 'Bose S1 Pro price' or 'BassBoss Diamon-RP-EG passive loudspeaker,' you probably found spec sheets and a lot of opinions. Here's a buyer's view. I'm going to compare total cost, setup friction, sound quality, and flexibility—and at the end, tell you what I'd order.

One quick note before the numbers: I'm not going to repeat a spec-sheet claim if I can't substantiate it. That's not just a personal rule; it lines up with FTC advertising guidelines (ftc.gov). If a dealer says 'this one is louder,' I want a measurement, not a story.

Total cost: Bose S1 Pro price vs. the passive system price

Start with cost. The Bose S1 Pro price at most U.S. dealers is roughly $599 to $749, depending on whether you're looking at the original model or the newer S1 Pro+. As of January 2025, Bose's site listed the S1 Pro+ at $749. The original model is getting harder to find, but when it's in stock, you'll see prices closer to $599. Verify current pricing on Bose's site before you issue a PO.

At first, the BassBoss looked like the budget pick. I want to say the Diamon-RP-EG quote came in around $550—though I might be misremembering the exact figure. But that didn't count the amplifier. Or the mixer. Or the cables. Once I added those, the total was more than the Bose. That's the surprise: in a true apples-to-apples system cost, the all-in-one Bose PA speaker can be cheaper than the passive route.

In my first year, I made the classic newbie error: comparing loudspeaker prices instead of system costs. I ordered a cheaper passive cab and forgot the amp. The overnight rental and rushed setup ate the savings. That's the penny-wise, pound-foolish tax, and it's real.

People ask about a 'Sennheiser audio mixer' all the time. Usually they mean: can I plug Sennheiser mics into a mixer? Yes. Any clean, reliable mixer with a mic input works. You don't need a mixer with a Sennheiser logo to make Sennheiser mics sound good. What you need is enough inputs and clean gain staging.

Setup: plug in and go vs. cables everywhere

Setup is where the Bose S1 Pro wins, and honestly, it isn't close. You plug it in, connect your mic or phone, and it works. The BassBoss Diamon-RP-EG is a passive loudspeaker. That means it needs a separate amplifier, speaker cable, mixer, and someone who knows how to set levels without making the CEO sound like a classroom intercom.

I'm not that person. Most of my coworkers aren't either. So the ease of the Bose matters more than raw output.

One event forced the point. We had two hours to set up an exec town hall after the venue's built-in system died. Normally I'd have a tech do a full test. There was no time. I went with the S1 Pro because I knew it would work. In hindsight, I should have tested it earlier, but with the VP walking in, I made the best call with the information I had.

Also, a quick flag for anyone landing here from 'police loudspeaker car': that's a different product entirely. A car-mounted PA and siren unit is designed for vehicles—it runs on 12 volts and bolts into the cabin. Neither the Bose S1 Pro nor the BassBoss Diamon-RP-EG is meant for that. If you need a police loudspeaker car system, talk to a public-safety vendor.

Sound: the trade-off nobody tells you about

Sound is where I expected the passive speaker to win. The BassBoss cab is bigger, and it can get loud. When we hooked it to a borrowed amplifier, it was undeniably louder than the Bose. But loud isn't the same as clear. For speech, the S1 Pro sounded better at normal office volumes. The BassBoss needed proper EQ and a human who knew what they were doing. Without that, it was harsh.

Here's what surprised me: for our use case—speech, background music, rooms up to maybe 150 people—the Bose S1 Pro actually sounded better than the bigger passive speaker. I expected the 'real' PA to win. It didn't.

But I can see the other side. If you regularly fill a warehouse or an outdoor stage, the BassBoss has more headroom. The risk is that someone has to know how to use it. The upside is raw output. I kept asking myself: is that upside worth being woken up by a bad ground loop before an 8 a.m. event? For us, no.

Flexibility: which one survives your company's growth?

The BassBoss fights back here. If your company already owns an amplifier and a compact mixer, the Diamon-RP-EG can last a long time. You can swap amps, add DSP, even integrate it into an installed sound system. The Bose S1 Pro is less serviceable. If the internal amp dies, the whole unit usually has to be replaced. That bothered me.

Still, for a small office, simplicity and portability matter more. The S1 Pro has a rechargeable battery, which means we can use it in the courtyard without running a power cord. That's a feature a passive setup can't easily match.

And if you ever outgrow the Bose, you don't have to trash it. It works well as a stage monitor, a huddle-room speaker, or a spare for whoever forgot to book the meeting room.

What should you order?

Here's my practical advice, in plain terms:

• If you don't already own an amp and mixer, and you don't have an A/V tech on staff, order the Bose S1 Pro. Check the Bose S1 Pro price at an official dealer and don't pay a crazy premium above list.
• If you already have a small audio mixer and an amp, plus someone who knows how to tune a passive PA, the BassBoss Diamon-RP-EG passive loudspeaker can be a better long-term value. That mixer doesn't need to be a 'Sennheiser audio mixer' just because your mics are Sennheiser.
• If the request says 'police loudspeaker car,' don't order a portable PA speaker. That's a vehicle-specific public-address system.
• If you need more than two inputs, add a small mixer. Brand matters less than clean gain staging.

I ended up ordering the Bose S1 Pro. Not because it's the best at everything—it isn't. It's the best fit for the way our office actually works. Hassle matters. Setup time matters. The vendor who says 'this isn't the tool for a police loudspeaker car' is the one I trust for everything else.