Sony actually manufactures two completely different types of products under the heading "F Series." A line of 2010 Sony VAIO laptops and a line of 2009 Sony microphones use the term F Series to categorize the specific models within each line. In addition, both the F Series of laptops and microphones contain four unique models, each with its own set of specifications.
VPCF1390X
The VPCF1390X is the most basic and least expensive Sony VAIO F Series laptop. However, consumers can customize this model with all kinds of extra options. The basic specifications include a 16.4-inch widescreen display, built-in webcam, Intel Core i7-740QM processor, 320 GB hard drive, NVIDIA GeForce 310M GPU, DVD+/-RW drive, Windows 7 Home Premium 64-bit operating system and 4 GB of RAM. All VAIO F Series laptops feature a standard lithium-ion battery--up to 2.5 hours of power--and 13 ports/card slots, including two USB 3.0 ports, a USB 2.0/eSATA port, 4-pin i.LINK connection, VGA output and SD memory card slot.
VPCF13BFX/B
One step above the VPCF1390X, the VPCF13BFX/B Sony VAIO F Series laptop features many identical specifications. However, the hard drive has been bumped up to 500 GB of storage space and Blu-ray read-only capabilities have been added to the optical drive. In addition, the video card has been bumped up to an NVIDIA GeForce 425M, which includes 1 GB of dedicated video RAM.
VPCF13AFX/B
A step up from the VPCF13BFX/B, the VPCF13AFX/B model features identical specifications, with the exception of a few notable upgrades. The RAM in this model has been increased to 6 GB, the Blu-ray player can both read and burn Blu-ray discs and the screen, although the same size, displays in full HD.
VPCF12XHX/B
The top-of-the-line F Series laptop, the VPCF12XHX/B is also known as the VAIO Signature Collection F Series laptop. This model is the only F Series laptop to feature either an upgraded processor (Intel Core i7-840 QM) or an upgraded operating system (Windows 7 Ultimate 64-bit). In addition, the hard drive has been increased to 640 GB of storage, the RAM has been increased to 8 GB and the screen is an LCD HD display.
F720
The cheapest Sony F Series microphone, the F720 is a fairly basic dynamic handheld microphone. It features unidirectionality, a frequency response of 50 Hz to 13 kHz and sensitivity of roughly -57 dB. In addition, the F720 experiences an output impedance of roughly 500 ohms, less than 10 dB SPL of induction noise from an external magnetic field and less than 55 dB SPL of wind noise. Like all Sony F Series microphones, this model features an XLR-3-12C type connector.
F112
Just barely more expensive than the F720, the F112 is an omnidirectional interview microphone. The specifications for this microphone include a frequency response of 60 Hz to 18 kHz, sensitivity of roughly -52 dB, output impedance of roughly 400 ohms, less than 5 dB SPL of induction noise from an external magnetic field and less than 50 dB SPL of wind noise.
F780
A hyper-cardioid handheld microphone, the F780 is essentially a much higher quality (and much more expensive) version of the F720. This unidirectional microphone features a frequency response of 50 Hz to 18 kHz, sensitivity of roughly -57 dB, output impedance of roughly 400 ohms, less than 5 dB SPL of induction noise from an external magnetic field and less than 50 dB SPL of wind noise.
F115B
A top-of-the-line interview microphone, the F115B is by far the most expensive Sony F Series microphone. This omnidirectional model features a frequency response of 40 Hz to 12 kHz and sensitivity of roughly -52 dB, output impedance of roughly 400 ohms, less than 5 dB SPL of induction noise from an external magnetic field and less than 40 dB SPL of wind noise.
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