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Copyright © 1996-20015 by Charles Keng. All Rights Reserved

My MP3 Player and Headphones


∞Audeze LCD-3 ZW-L-TC Planar Magnetic Heaphones. Wth Zebrano Wood Earcups, Lambskin Leather Earpads and Ruggedized Travel Case. Jan. 7, 2015.
Specifications
Style: Open circumaural
Transducer type: Planar magnetic
Magnetic structure Proprietary: push-pull design
Magnet type: Neodymium
Transducer active diaphragm area: 39.8 cm2 (6.17 in2)
Maximum power handling: 15W (for 200ms)
Sound pressure level: >130dB with 15W
Frequency response: 5Hz – 20kHz extended out to 50kHz
Total harmonic distortion: <1% through entire frequency range
Impedance: 110 ohms
Efficiency: 102dB / 1mW
Optimal power requirement: 1 – 4W
Weight Approximate: 548 g

∞Sennheiser IE800. Nov. 22, 2014.
Technical Data
Impedance: 16 Ohms
Frequency response 8 - 41000 Hz (-3 dB): 5 - 46500 Hz
Sound pressure level (SPL): 125 dB at 1V 1kHz
THD, total harmonic distortion: < 0,06% (1 kHz, 94 dB)
Ear coupling: Intraaural
Jack plug: 3.5 mm stereo plug
Cable length: 1.1 m symmetrical, oxygen-free (OFC) copper cable
Transducer principle: Dynamic, vented closed
Weight Without cable: 8 g
Attenuation: - 26 dB
Operating temperature: -10 °C to +55 °C
Frequency: Diffuse field equalized

∞Cypher Labs AlgoRhythm Duet portable headphone amplifier. Nov. 22, 2014.
Specifications:
Frequency response in both balanced and unbalanced mode:
• 5Hz-150kHz ±1dB

Gain Settings:
• Low: -6dB
• Medium: +3.5dB
• High: +15dB

Balanced output power with both channels driven:
• 70mW into 32Ω
• 100mW into 50Ω
• 240mW into 300Ω
• 120mW into 600Ω

Unbalanced output power with both channels driven:
• 70mW into 32Ω
• 100mW into 50Ω
• 240mW into 300Ω
• 120mW into 600Ω

Impedance:
• < 1Ω

Power and Battery:
• Built in Rechargeable Lithium-18650 Battery
• Front Power on LED: Blue
• Back Charge Indicator LED: Charging-Red; Charged-Green
• Playtime: 10-14 hours
• Recharge Time: 3 hours with included micro USB wall power adapter

∞ibasso Audio DX90. Nov. 19, 2014.
Specifications:
Line out:
Frequency Response: 17Hz~20KHz +/-0.1dB
S/N: -119dB +/-1dB
THD+N: 0.0015%
Crosstalk: 115dB (1KHz)
Output Level: 1.7Vrms (1kHz 0dB)

Headphne out:
Frequency Response: 17Hz~20KHz +/-0.1dB
THD+N: 0.0015% (32ohm load)
Output Level: 1.3Vrms(Low gain), 2.0Vrms(Mid gain), 2.8Vrms(High Gain)
S/N: -118dB +/-1dB(Low gain), -116dB +/-1dB(Mid gain), -115dB +/-1dB(High Gain) (32ohm Load)
Crosstalk: 75dB (1KHz,32ohm Load)
Output Impedance: <0.1ohm

Battery Life: 8.5hours
Battery Charge Time: 3hours with AC adapter, 5.5hours with PC USB port
On Board Flash: 8GB
Audio Formats Supported: APE, FLAC, WAV, WMA, AAC, ALAC, AIFF, OGG, MP3, DSF
Case dimension: 2.52W x 3.98L x 0.67H (inch)
64W x 100L x 17H (mm)
Weight: 140g or 4.94oz

∞Sennheider HD 800. Nov. 19, 2014.
Technical Data
Wearing style: Headband
Color: silver
Frequency response (headphones): 14 – 44100 Hz (- 3 dB)
Frequency response: 6 – 51000 Hz (- 10 dB)
THD, total harmonic distortion: 0.02 % (1 kHz 1 Vrms)
Contact pressure: ~ 3,4 N (± 0,3 N)
Jack plug: Jack stereo ¼” (6,3 mm)
Cable length: 3 m
Weight Without cable: 330 g
Nominal impedance: 300 Ω


∞AKG K3003. Oct. 25, 2014.
Specs
Driver configuration: 3-way Hybrid technology, 1 dynamic driver + 2 balanced armature drivers.
Design: In-ear
Color: Stainless steel & black
Frequency range: 10 Hz – 30 kHz
Sensitivity: 125dB SPL/V
Input impedance: 8 ohms
Max. input power: 15 mW
Net weight (without cable): 10 g (0.4 oz)
Cable length: 1.2 m (3' 9'')
Main connection 3.5 mm (1/8'')



∞Astell & Kern AK120 II. Oct. 11, 2014.
General Specifications
Model: AK120Ⅱ
Body Color: Stone Silver
Body Material: Aluminum
Display: 3.31inch WVGA (480 x 800) AMOLED Touchscreen
Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE(Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF/DSD
Sample rate: FLAC, WAV, ALAC, AIFF : 8kHz ~ 192kHz (8/16/24bits per Sample)
/ DSD : DSD64 (1bit 2.8MHz), Stereo / DSD128 (1bit 5.6MHz), Stereo
Output Level: Unbalance 2.1Vrms / Balance 2.3Vrms (Condition No Load)
DAC: Cirrus Logic CS4398 x2 (Dual DAC)
Decoding: Support up to 24bit/192kHz Bit to Bit Decoding
Input: USB Micro-B input (for charging & data transfer (PC & MAC))
/ Connection Mode : MTP (Media Device)
Outputs: PHONES (3.5mm) / Optical Out (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)
Wi-Fi: 802.11 b/g/n (2.4GHz)
Bluetooth: V4.0
Dimensions: 2.16 ”(55 mm) [W] x 4.64 ”(118 mm) [H] x 0.58 ”(14.9 mm) [D]
Weight: 6.24 oz (177 g)
Feature Enhancements: Firmware upgrades supported (OTA)
Audio Performance
Frequency Response: ±0.023dB (Condition: 20Hz~20kHz) Unbalance & Balance
/ ±0.3dB (Condition: 10Hz~70kHz) Unbalance & Balance
Signal to Noise Ratio:116dB @ 1kHz, Unbalance / 117dB @ 1kHz, Balance
Crosstalk:130dB @ 1kHz, Unbalance / 135dB @ 1kHz, Balance
THD+N: 0.0007% @ 1kHz, Unbalance / 0.0005% @ 1kHz, Balance
IMD SMPTE: 0.0004% 800Hz 10kHz(4:1) Unbalance / 0.0003% 800Hz 10kHz(4:1) Balance
Output Impedance: Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)
Clock source
Clock Jitter: 50ps (Typ)
Battery
Capacity: 3,250mAh 3.7V Li-Polymer Battery
Memory
Built-in Memory: 128GB [NAND]
External Memory: microSD (Max 128GB) x1
OS
Supported OS: Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up

∞Grado RS1i Reference Series Headphones. Oct. 1, 2014.
Specifications
Impedance: 32 OHM
Sensitivity: 98 DB
Frequency (High): 30 kHz
Frequency (Low): 12 Hz
Operating Principle: Open Air
Weight: 255 g

¤SONY NWZ-A866/B 32GB Video (AVC, MPEG-4, Windows Media Video 9)/ Music (MP3, WMA, AAC-LC, Linear PCM) Player/ JPEG Photo Viewer/ MP3 Voice Recording. Dec. 13, 2011.

¤Jays q-Jays Earphones. Jan. 8, 2012.
Driver Type Dual Micro Armatures
Sensitivity 95 dB SPL @ 1 kHz
Impedance 39 Ohm @ 1 kHz
Frequency Response 20 Hz - 20 000 Hz
Earphones
Isolation JAYS Sound Isolating Sleeves
Size (L)19 x (W)7.5 x (H)7.4 mm
Weight 8 grams (0.28 oz)
Cord
Type TPE coated with Kevlar filling
Length 60 cm (23.5 in)
Diameter 2/1.5 mm (0,079/0,059 in)
Plug Straight, Gold-Plated Stereo Plug 3.5 mm (1/8 in)
Extension Cord 90 cm (35.5 in)

*My JBL On Tour. A Compact, Lightweight, High Performance Portable Sound System. Compatible with all iPods, MP3 and CD/VCD/DVD players, Laptops/Desktop computers and most portable devices. Input: 1/8" (3.5mm) Mini Stereo Jack. Drivers: Two Odyssey™ Neodymium drivers. Power Output: 3 Watts per channel (Class D). Frequency response: 100Hz-20KHz. Input Impedance: >10Kohm. Signal-to-Noise Ratio: >80dB. AC (100-230 Volts, 50-60 Hz) or battery operated (4xAAA), >24 hours continuous play. Dimensions: Width: 7" (175mm) x Depth: 3.5" (88mm) x Height: 1.4" (35mm). Weight: 12 oz (350g). October 17, 2006.
∞JBL On TOUR™ MICRO. Sept. 20, 2012.
TECHNICAL SPECIFICATIONS
Transducer: JBL Odyssey
Amplifier power: 2.2W
Frequency response: 150Hz – 20kHz
Signal-to-noise ration: >70dB
Battery type: Lithium-ion
Input connections: Mini USB jack for use with included USB
power cable with 5V DC input; 3.5mm
stereo plug
Listening time on battery power: >6 hours (@0.2W)
Battery charge time: 3.5 hours
Size (diameter x height): 3.15" x 1.48" (80mm x 37.5mm)
   
My Weather Station, Clock and Multi-Sensor Watches
*Left: Oregon Scientific BAA339DPH Daylight Weather Projection Clock. Digital Clock, 180° rotating projection of weather forecast, time and outdoor temperature, Projection feature brightens as room light levels increase, Weather forecast is shown in easy-to-read icons – sunny, partly cloudy, cloudy, rain or snow, Indoor and 1-channel outdoor temperature display, LCD with red LED backlight, CDS sensor for projection and LCD backlight brightness control, AC adapter Input: 230V 50Hz Output: 5V DC 500mA. included for continuous projection. 3V CR2032 x 2 pieces batteries for backup.
*Right: Oregon Scientific THN318H wireless outdoor temperature sensor unit. Transmits thermometer reading via radio signal to main unit. One 1.5V AA battery. November 26, 2008.
*Oregon Scientific RM329P Projection Clock with Thermometer. Projects digital time image on ceiling or wall of darkened room. June 1, 2006.
*Left to Right:
Suunto Advizor~ Heart Beat Rate, Digital Compass, Altimeter, Barometer, Thermometer,  Alarm, Stop Watch, Timer and Water Resistant: 30 Meters.
Casio ProTrek PRG-40B~ Digital Compass, Altimeter, Barometer, Thermometer, Alarm, Stop Watch and Water Resistant: 100 Meters.
Casio ProTrek PRT-420 Titanium~ Digital Compass, Altimeter, Barometer, Thermometer, Alarm, Stop Watch and Water Resistant: 10 Bar.
Casio PRT-50FGJ~  Altimeter, Barometer, Thermometer, Alarm, Stop Watch and Water Resistant: 10 Bar

All Brands and Names mentioned above are registered trademarks and properties of their respective owners, manufacturers and companies.
 

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Camera used:
∞∞Sony DSC-RX100 20.2 mega pixels camera with 28-100mm (35mm equivalent APS size) F1.8- F4.9 Carl Zeiss Vario-Sonnar T* lens
∞Sony SLT-A77VQ 24.3 Mega Pixels Camera with Sony SAL1650, DT 16-50mm, 24-75mm (APS size) F2.8 SSM lens
¤¤Sony DSC-HX7V 16.2 mega pixels camera with 25-250mm (35mm equivalent APS size) F3.5(W)-F5.5(T) Sony G lens
¤Sony SLT-A55V Digital 16.2 Mega Pixel Camera with Carl Zeiss Vario-Sonnar T* 24-70mm (36mm-105mm, 35mm equivalent APS size) F2.8-22 Z SSM Lens, Sony SAL55200-2. DT 55-200mm F4-5.6 SAM, Sony SAL1855. DT 18-55mm F3.5-5.6 SAM Lens and Sony SAL-50M28, 50mm F2.8 Macro Lens.
 ¤¤Sony HDR-CX550 Digital Full HD Memory Stick Handycam®. 1/2.88 type "Exmor R" CMOS Sensor, Sony G Lens, Aperture: F1.8-3.4, Focal Length (35mm equivalent) : Photo: 28.7 - 287mm (16:9), 26.3 - 263mm (4:3); Movie: 29.8 - 298mm (16:9), 36.5 - 365mm (4:3), Zoom Optical: 10x Digital: 120x, Video Recording HD:MPEG4-AVC / H.264 (AVCHD)  STD: MPEG2-PS, Still Image Size Photo Mode Approx. 12M pixels max. Movie Mode Approx. 8.3M pixels max., 3.5 type Wide (16:9), 921.6K dots, Touch Panel Xtra Fine LCD with TruBlack Technology
¤Sony a550 Digital SLR 14.2 Mega Pixel Camera with Carl Zeiss Vario-Sonnar T* 24-70mm (36mm-105mm, 35mm equivalent APS size) F2.8-22 Z SSM Lens, and Sony SAL1855 (27-82.5mm) F3.5-36 DT Lens.
^Sony DSC-W200 Cyber Shot Digital Still Camera (12.1 Mega Pixels) with Carl Zeiss® Vario-Tessar® 7.6mm-22.8mm (35mm-105mm when converted to a 35mm still camera APS size), F/2.8-5.5 Lens.
'Sony HDR-UX5 Digital High Definition DVD Video Camera Recorder. AVCHD (MPEG-4 AVC/H.264) HD/MPEG-2 SD Video/VR Mode (16:9/4:3 ratio)/JPEG images; Carl Zeiss Vario-Sonnar T*, 10x Optical & 20x, 80x Digital Zoom, 1/3" ClearVid CMOS Sensor, 2.1 Mega Pixels (Gross); 4.0 Mega Pixels Still Image Recording, 2.7 inch Touch Panel White Clear Photo LCD Plus.
 **Sony DSC-W90 Cyber Shot Digital Still Camera (8.1 Mega Pixels) with Carl Zeiss® Vario-Tessar® 5.8mm-17.4mm (35mm-105mm when converted to a 35mm still camera) f/2.8-5.2 Lens.
*Sony DSC-R1 Cyber Shot Digital Camera (10.3 Mega Pixels) with Carl Zeiss Vario-Sonnar T* 14.3mm-71.5mm (24mm-120mm when converted to a 35mm still camera) f/2.8-4.8 lens.
**Sony DSC-V3 Cyber Shot Digital Camera (7.2 Mega Pixels) with Carl Zeiss Vario-Sonnar 7mm-28mm (34mm-136mm when converted to a 35mm still camera) f/2.8-4.0 lens.
*Sony Ericsson W800i with 2.0 mega pixels camera.
**Sony DSC-V1 Cyber Shot Digital Camera (5.0 Mega Pixels) with Carl Zeiss Vario-Sonnar 7mm-28mm (34mm-136mm when converted to a 35mm still camera) f/2.8-4.0 lens.
*Sony DSC-U20 Cyber Shot Digital Camera (2.0 Mega Pixels) with 5mm (33mm converted to 35mm still camera) f/2.8 lens.
*Sony DSC-S70 (Cyber-Shot  3.3 Mega Pixels) Digital Still Camera (with Carl Zeiss Vario-Sonnar 7-21mm (34-102mm when converted to a 35mm still camera) f/2.0-2.5 Lens, Sony VAD-S70 adapter ring and Nikon L37 52mm filter.
*Canon Ixus X-1/Elph Sport APS (Advanced Photo System) Waterproof (5m/16 ft.) Still Camera with Canon 23mm f/4.8 lens
Film: Kodak Advantix ISO 200 film
**Contax G1 with Carl Zeiss Planar 45mm lens and Contax TLA 140 flash.
Film: Fuji Superia ISO 100 24x36mm film.
**Canon EOS-1N with Canon Zoom Lens EF 28-70mm 2.8L USM Ultrasonic lens and Canon Speedlite 540EZ Flash
***Nikon F2-AS with Nikkor 50mm f1.4 and 28mm f2.0 lens, Metz Mecablitz 32Z-1 Flash.
***From friends
Scanners:
+Hewlett Packard Scanjet G3010 USB Flat Bed Photo Scanner. 4800 X 9600 dpi resolution 48-bit color, scan negative and slide
***Microtek ScanMaker II HR
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 Page created September 18, 1996 Last update: Sabado, Marso 12, 2016.

Copyright © 1996-2016 by Charles Keng. All Rights Reserved