Type | |
Frequency Range | |
Impedance | |
Sensitivity | |
Maximum Input Power | |
Connectors | |
Weight |
Technical specifications
Headphone Specs Type Active Noise Canceling Style
In-ear Canal
Transducer Type
Dynamic Balance
Diameter
13 mm
Input Connections
gold-plated 3.5 mm
Included Ear Tips 3 Pairs StayFit Silicone Ear Tips(S/M/L);
2 Pairs StayFit 3-Flange Silicone Ear Tips (S/L);
2 Pairs Memory Foam Ear Tips (S/L) Included Cables 56-inch length Built-in Microphone Yes Electrical Max Sensitivity 115 dB Minimum Impedance
16 Ohms
Total Frequency Response 8 Hz-25 kHz Shipping Included Accessories Moisture Resistant Soft Case; Nokia Adaptor; Airline Adaptor; Shirt Clip; Owners Manual; Quick Start Guide; One AAA battery Warranty Parts Warranty 1 year Labor Warranty 1 year
*To ensure a valid warranty, Polk loudspeakers must be purchased through an Authorized Polk home or car loudspeaker Dealer (such as Amazon.com). (If you’re not sure a dealer is “authorized,” call Polk at 1-800-377-7655, and ask us.) The warranty is not transferrable, that means it applies only to the original purchaser. If you purchase your speakers from a private individual, that product is considered “used” and has NO factory warranty, no matter what the seller implies. The warranty is VOID if the serial number of the speaker has been removed or defaced. If you have any questions about your warranty coverage, or you think you need service, call Polk Customer Service at 1-800-377-7655. We’re here to help you get the most from your new speakers!
in the box
開放式耳機
單體類型:動圈
頻率範圍:5 – 35,000 Hz
重量 290 g
阻抗 250Ω
SPL : 96dB
最大輸入功率:100 mW
噪訊比: < 0.2%
線長:3m
Impedance | 64 OHM |
Connector | 3.5mm female jack connector inside the cup that connects with the cables |
Frequency response | 10 Hz – 22 kHz |
Max Sound Pressure (SPL) | 102 dB (1kHz, 1Vrms) |
Ear coupling | Circum-Aural |
Cable length | 0.8m straight cable and 3m maximum length for the coiled cable |
Transducer type | Dynamic Transducer, closed back type, NdFeB magnet, 50mm driver size |
Weight without cable | 295g |
Passive noise attenuation | Up to 32 dB |
Total Harmonic distortion | <1% (1kHz, 100dB SPL) |
Type | Circumaural, Closed-Back |
Frequency Range | 8Hz – 35kHz |
Impedance | 40 Ohms |
Sensitivity | 94dB |
Maximum Input Power | Not Specified by Manufacturer |
Connectors | 1/4″ Stereo Plugs |
Cable Length | 1 x 2.62′ (0.8 m) (Straight)
1 x 9.84′ (3 m) (Coiled) |
Weight | 10.4 oz (295 g) (Without Cord) |
Type | On-ear, dynamic, closed-back |
Frequency Range | 19 Hz – 21 kHz |
Impedance | 32 ohms |
Sensitivity | 108 dB |
Total Harmonic Distortion | < 0.5% |
Connectors | Standard 3.5mm Stereo Mini Plug |
Cable Length | 4.5′ (1.4 m) |
Technical Specifications
Manufacturer: JBL, Inc..
Model Name: JBL Reference 420
Available in: Black
Input Requirement: Main connection – 3.5mm stereo mini jack
Power: 50mW
Sensitivity: 91dB SPL/mW @ 1kHz
Frequency Response: 10Hz – 20kHz (–10 dB)
Dimensions: Diameter – 102mm
Main audio cable – 1.5m
Extension cable – 1m
Weight: 170g (without cord)
Input Impedance: 32 Ohms
類別
|
密閉式動態
|
單元直徑
|
Ø53 mm
|
外殼
|
淺田櫻木
|
頻率響應
|
5 ~ 42,000 Hz
|
最大承受功率
|
2,000 mW
|
靈敏度
|
99 dB/mW
|
阻抗
|
40 Ω
|
輸入接口
|
A2DC 插孔
|
重量
|
約 395 g
|
隨機附件
|
可拆卸式導線 (3.0m / 6.3mm 鍍金立體聲標準插頭);
平衡導線 (3.0m / XLR-M 接頭 (4 針)) |
類別
|
密閉式動態
|
單元直徑
|
Ø53 mm
|
磁體
|
波門杜爾高磁性鐵鈷合金
|
外殼
|
黑檀木
|
頻率響應
|
5 ~ 45,000 Hz
|
最大承受功率
|
2,000 mW
|
靈敏度
|
102 dB/mW
|
阻抗
|
48 Ω
|
輸入接口
|
A2DC 插孔
|
重量
|
約 405 g
|
隨機附件
|
可拆卸式導線 (3.0m / 6.3mm 鍍金立體聲標準插頭);
平衡導線 (3.0m / XLR-M 接頭 (4 針)) |
單元 : 50mm
電源: 2 “AAA” (包含)
靈敏度(IEC): 104 ± 3dB
頻率回應: 20 – 20,000 Hz
耳機線長: 1.22m (4ft)
插孔: 3.5mm
單體形式:開放動圈
頻率響應:5Hz~50kHz
阻抗:32Ω
靈敏度:102dB
平均功率:300mW
重量:360g(不含線材)
半開放式耳機
單體類型:動圈
頻率範圍:5 – 35,000 Hz
重量 295 g
阻抗 32Ω/250Ω/600Ω可選
SPL: 96dB
最大輸入功率:100 mW
噪訊比: < 0.2%
線長:3m
類別
|
密閉動圈式
|
驅動單元
|
Ø45mm
|
頻率響應
|
5 ~ 50,000Hz
|
最大承受功率
|
2,000 mW
|
靈敏度
|
101 dB/mW
|
阻抗
|
36 Ω
|
重量
|
237 g
|
連接線
|
1.2m 耳機導線(Ø3.5mm L型鍍金立體聲迷你插頭);
1.2m 平衡耳機導線(Ø4.4mm L型鍍金5極插頭) |
隨機附件
|
攜存袋
|
顏色
|
ATH-MSR7b BK (黑色),
ATH-MSR7b GM (暗灰色) |
Type | Closed-back dynamic |
Driver Diameter | 45 mm |
Magnet | Neodymium |
Voice Coil | CCAW (Copper-clad aluminum wire) |
Frequency Response | 15 – 28,000 Hz |
Maximum Input Power | 1,600 mW at 1 kHz |
Sensitivity | 99 dB |
Impedance | 38 ohms |
Weight | 285 g (10 oz), without cable and connector |
Cable | Interchangeable cables: detachable 1.2 m – 3.0 m (3.9′ – 9.8′) coiled cable, detachable 3.0 m (9.8′) straight cable and detachable 1.2 m (3.9′) straight cable |
Accessories Included | Protective carrying pouch, 6.3 mm (1/4″) screw-on adapter |
* 類型:密閉式耳機.
* 頻率範圍:5 to 35,000 Hz.
* 阻抗:34 Ω.
* Nominal SPL : 99 dB SPL (1 mW / 500 Hz).
* Max. SPL : 119 dB SPL (200 mW / 500 Hz).
* 最大輸入電源:100 mW.
* 耳機線:1.25公尺長(捲線)可延伸至3公尺.
* 連接頭:Gold plated stereo jack plug (3.5 mm) and 1/4″ adapter (6.35 mm).