# Beryllium V3

### Description

**Let It Be**  
Be (Beryllium) is our highest-awarded IEM. It is known as the master-of-all-music, failure-at-none. Our other IEMs may do better in some genres but for all-around excellence, Be is where most end their search. Revealing enough to be a true reference IEM but forgiving enough to use on any source.

Beryllium is among the lowest density stable metals but also has among the highest Young’s modulus values (a ratio of the stiffness) and a very high internal speed of sound. This results in high efficiency and extremely low distortion as the diaphragm does not bend on its own, moves homogeneously, and dissipates internal energy very well.

This rare combination of performance attributes is what endows the Be IEMs with their freakish ability to compete with the best Beryllium transducer-based headphones on the market, at any price.

Still not sure that this IEM is for you? Then use [our amazing Select-A-Tron](/content/select-a-tron/index.html) to guide your IEM choice!

**Transducer Diaphragm:** Beryllium  
**Transducer Surround:** Bonded PEEK  
**Transducer Basket:** Aluminum  
**Transducer Magnet:** N48H Grade Neodymium  
**Enclosure Body:** Eastman Tritan™  
**Protective Grille:** 316 Stainless Steel  
**Bonding Compound:** Cyanoacrylate Adhesive  
**Sealant Compound:** Polyvinyl Acetate  
**Mounting Tips:** Medical Grade Silicone and Urethanes

**All components are finite element analyzed for stress, strain, and durability.**

### **Included Accessories**

- Single Flange Tips – Small, Medium, Large
- Dual Flange Tips – Small, Medium, Large
- Memory Foam Tips – Small, Medium, Large
- Protective Travel Case
- Gold Plated ¼” TRS Adapter Jack
- Gold Plated Dual Mono Airplane Adapter

### Specifications

| Performance |  
| --- |  
| Frequency Response | 12 Hz to 45 kHz |  
| Impedance | 32 Ohms nominal |  
| Sensitivity | 100 dB SPL at 1mW in ear |  
| Power Handling | 200 mW continuous |  
| Peak SPL | 123 dB |  
| THD | Less than 1% THD at 1mW |

| Physical Properties |  
| --- |  
| Cable Length | 1.5 m |  
| Mass | 2.8 / 9.3 g (IEM/Set) |  
| Operational Temperature | -20 to +50° C |  
| Operational Humidity | 0-95% Relative Humidity |  
| NRR | 31.3 dB (foam eartrip) |  
| Overall Length | 21 mm |  
| Body Diameter | 12 mm |  
| Nozzle Diameter | 6 mm |

| Material Properties |  
| --- |  
| Melting Point | 1560 Kelvin |  
| Speed of Sound | 12890 meters per second |  
| Young’s Modulus | 287 Gigapascals |  
| Brinell Hardness | 1320 Megapascals |

Tritan™ is a trademark of Eastman Chemicals

### Reviews

1. **Pavan V** – Rated **5** out of 5  
   "I have been a fan of Periodic Audio Be since I bought them in v2 around 2019, so much so that I bought 2 pairs..."

2. **Krishnamoorthy Muthulingam** – Rated **5** out of 5  
   "I rate the periodic audio beryllium v3 5 stars for its clean sound..."

3. **Rick W** – Rated **5** out of 5  
   "So, I’m a writer and listening to music can make a big difference getting in 'The Zone.' However, if the earbuds don’t sound good..."

4. **Johnny On The Spot** – Rated **5** out of 5  
   "VERY good audio from these! I have some more expensive units..."

5. **Shawn** – Rated **5** out of 5  
   "OK, SICK. Got some of these last month and MAD bad sound..."

6. **Walter** – Rated **5** out of 5  
   "You’ve been listening to music with cotton balls in your ears until you’ve tried these IEMs!"

7. **Theo** – Rated **5** out of 5  
   "I get why people rave about these..."

8. **Brian R.** – Rated **5** out of 5  
   "One word – stunning. Be is really natural sounding..."

### Images