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Orders placed before 3 p.m. ET usually ship the same business day.Learn More
2-Year Free Warranty on Guitars
Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.Contact Us for Details
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Etymotic Research ER4SR Studio Reference Earphonestrue true
Musician's Friend Rewards
This oversized item has special shipping requirements
- Free Shipping
- Flexible Financing
- Lowest Price
- Ships Internationally
Gold Coverage Protection
Protect your gear
Gold Coverage Protection
Gold Coverage goes above and beyond the manufacturer's warranty to protect your gear from unexpected breakdowns, accidental damage from handling and failures. This plan covers your product for one, two, three or up to five years from your date of purchase, costs just pennies per day and gives you a complete "no-worry" solution for protecting your investment.
Gold Coverage Includes:
- Unexpected and unintentional spills, drops and cracks
- Normal wear and tear
- Power surges
- Dust, internal heat and humidity
Other plan features include:
- For products over $200, No Lemon Policy applies. If it fails for the same defect 3 times, it is replaced on the 4th breakdown. (Does not apply to failures due to drops, spills, and cracks)
- For products under $200 experiencing the above failures, a Musician's Friend gift card will be issued for the full price of the product + tax.
- Shipping fees covered if required for repair or replacement
- Plans are transferable in the event merchandise is sold
- Plans are renewable on new gear
*Limitations and exclusions apply. See terms and conditions (Opens in new window) for program details
Term for New Gear begins on date of purchase but does not replace the store return policy or manufacturer coverage.
High fidelity, high accuracy technology creates the best audio experience.
The ER4SR modal delivers sound accuracy with greater output for a high fidelity experience.
For in-ear earphones that are best in class, order today.
ER4SR Studio Reference Earphones Specifications:
- Frequency Response: 20 Hz - 16 kHz
- Transducers: High performance, balanced armature micro-drivers
- Noise Isolation: 35-42 dB
- Impedance (@1kHz): 4XR (45 Ohms) 4SR (45 Ohms)
- Sensitivity (@1 kHz) SPL at 0.1v: 4XR (98 dB) 4SR (98 dB)
- Maximum Output (SPL): 122 dB
- Cable: 5 ft Detachable
- User Replaceable ACCU-Filters: Yes
- Warranty: 2 Year Manufacturer's
- Custom-Fit Option: Yes
- Free Standard Ground shipping (48 contiguous states, some overweight and Used/Vintage items excluded).
- Orders placed before 3 p.m. ET usually ship the same business day.
Every guitar or bass you purchase from Musician's Friend (electric or acoustic, New or Open Box) includes two years of protection from manufacturer defects.
Our Gear Advisers are available to guide you through your entire shopping experience. Call or Chat for expert advice and to hear the latest deals.