Rhythm Pro 2'x4' Acoustic Panel – Sandstone Rhythmic Surface
Groove in form. Stillness in sound.
With rhythmic vertical lines that echo the pulse of music, Rhythm Pro balances bold geometry with sonic control. available both at 2'x2' and 2'x4', it fits into creative corners, desktop setups, or full-room arrays - diffusing low-mids, absorbing everything above, while deepening low-end clarity through its internal air gap.
Stack. Rotate. Grid.
Every panel aligns like a beat — intentional, modular, and repeatable. Designed to snap into the flow of your space, or break it with precision.
“They’re so beautiful, they inspire me to create.”
- Rowan Garmon, Producer
Lab-tested. No foam. No filler. Just presence.
Ships within 2 business days via FedEx/UPS Ground from our CA warehouse. Delivery typically takes 4–8 business days depending on location. Free 30 day returns.
Pairs well with
Rhythm Pro 2'x4' Acoustic Panel – Sandstone Rhythmic Surface
“These are perfect if you’re looking for acoustic panel to bring down sound reverberation and also look cool.”
— Verified Buyer | Amazon ReviewS1000R Rider
"These art pieces have truly elevated our home to a designer level."
— Verified Buyer | Amazon Reviewforeverblackfriday
“They’re so beautiful, they inspire me to create.”
— Rowan GarmonProducer & Musician
"Well Designed and Wife Approved"
— Verified Buyer | Amazon ReviewChiquita Hall
Dimensions
22.6" x 46.3" x 2" THK (575mmx1175mmx50mm)
Materials
Recycled Polyester Felt + Brushed Anodize Aluminum Frame
Eco-Friendly
Our PET Felt Acoustic Panels are made of recycled plastic bottles, and therefore small variations in colour blends can appear.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
United States
- Acoustic panels ship via FedEx/ UPS Ground from our CA or NJ warehouse.
- Bags ship free via USPS Ground to all 48 contiguous states
Asia
- Acoustic Panels — please contact us for international shipping options.
- Bags (tote and roll-top styles) ship via SF Express to Taiwan, Hong Kong, Japan, Korea, and more.
✈️ Estimated delivery times:
- US: 4–8 business days (FedEx/ UPS/ USPS Ground)
- Taiwan: 2–3 business days (SF-Express)
- Hong Kong: 2–3 business days (SF-Express)
- Japan & Korea: 3–6 business days (SF-Express)
Other regions
For all other destinations or special requests, feel free to contact us: info@massform.com
We’ll guide you through international options — just cover shipping and any import fees. -
Information
- Designed in Taipei, crafted in small batches
- Warehouses: Los Angeles | Taipei
- Eco-friendly PET felt made from recycled bottles
- Free 30-day returns on standard orders
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Customer Support
We reply within 24 hours on weekdays.
General questions: info@massform.com -
FAQ’s
Q: Do you ship internationally?
A: Yes. Bags ship across Asia; panels ship worldwide on request—just cover shipping and duties.Q: Can I return a custom panel?
A: Custom orders are final, but we’ll help you adjust or replace if there’s a manufacturing issue.Q: How do I clean the panels?
A: Use a vacuum with a soft brush head. For marks, dab gently with a damp cloth—no harsh chemicals. -
Contact Us
Email — info@massform.com
Time zone: GMT+8 (Taipei)
We’re a small team, but we read every message and usually reply within one business day.
Lab-Tested Performance. Without the Lab Look
Rhythm’s sculpted slats excel at taming tricky vocal and low-mid frequencies - specially around 315 Hz. Not for cramped corners, but perfect when space meets intention.
PERFORMANCE
Our panels don’t just look great — they deliver real acoustic results. This chart reflects how sound behaves with our material in play.
- Rhythm Series w/ basstrap NRC 1.05
- Rhythm Series NRC 0.90
How We Measured This Performance
We tested Rhythm Pro in a real room — not a simulation. Using REW software, a calibrated mic, and our own space, we measured real acoustic improvements. Then we calibrated our results using certified lab data from our Surge panel.
If you're curious about how we did it, or want to see the full setup (yes, there’s a GIF), check out the full test:
Built-In Air-Gap. Bass, Balanced.
A factory-set 1.3" (35 mm) cavity behind every panel smooths bass below 250 Hz, giving you controlled low-end the moment it’s on the wall — zero add-ons, zero extra steps.
🎵 “Most of the studios I’ve built were acoustically incredible—but felt like a dungeon. I wanted something that sounds amazing and actually makes me want to create.”
— Rowan Garmon, Producer & Musician
Modular Basstrap Compatible
This panel is ready for deeper bass control. Just snap on our modular basstrap kit whenever your space needs it — no replacements, no hassle.
We did the math so you don’t have to.
Turns out, looking good and sounding good aren’t mutually exclusive.
| Feature | GIK Alpha 2” Panel | Massform 2” Panel | GIK Alpha 4” Panel | Artnovion Avalon Flow | Foam Panels |
|---|---|---|---|---|---|
| NRC Rating | ≈ 0.80–1.0 | Up to 1.15 | ≈ 1.1–1.2 | ≈ 0.7 | ≈ 0.3–0.6 |
| Visual Design | Flat w/ cutout | Sculpted 3D form | Bulky rectangle | 3D Wood slats | Wedged foam |
| Depth | 2” | 2” (stackable to 8") | 4” | 3.5” | 1–2” |
| Diffusion Built-In | Yes | Yes | Yes | Yes | No |
| Unit Size (in) | 23.5×23.5/23.5×45.5 | 22.6×22.6/22.6×46.3 | 23.5×23.5/23.5×45.5 | 23.4×23.4 | 12×12/24x24 |
| Price | $79.99-184.99 | $129–229 | $109.99–214.99 | ≈ $488 (converted) | ≈ $19.99-59.99 |
| Price per sq in | $0.13-0.21 | $0.2–0.26 | $0.16–0.26 | ≈ $0.89 | ≈ $0.02–0.05 |
| Modularity/Future-Proof | ❌ | ✔ modular + bass upgrade | ❌ | ❌ | ❌ |
| Real-World Feel | Music Studios | Enhances Any Space | Studio Utility | Designer Studio | Dorm / beginner |
