High-fidelity audio you never expected.
VHS HiFi is one of the best analog audio tape formats.
Nothing superfluous.
Comparative testing reveals performance characteristics on par with CD quality—yet this is an analog format,
 not a digital one.
 It is better to hear the sound once than to watch bloggers ten times over.
 
The Panasonic AG-6850H is a Hi-Fi VHS stereo.
 VCR/duplicator featuring the Quest Intelligence (IQ) Tape Transport Mechanism.
 The IQ mechanism features a five-motor system, including a unique, large direct-drive capstan
 and two direct-drive motors for the supply and take-up reels. 
There is also a large diameter impedance roller that will absorb tape vibrations more effectively. 
Features: Bottom cylinder designed for durability Low power consumption, 25W in recording mode. 
Remote control 34pin-contact remote control terminal can be used to connect the Panasonic AG-A600.
This is the most reliable heavy-duty Tape Transport mechanism installed 
in certain professional broadcast-series video recorders—including the most expensive model, 
the Panasonic NV-V10000 Video Master, priced at 417,000 yen.

                                     Panasonic AG-6850                                        Nakamichi ZX 9
Wow and flutter.           0.005 Hi-Fi Audio                                             0.022% or less WTD RMS
Frequency response.  10 Hz ~ 25 kHz ± 3 dB                                     20 Hz ~ 21 kHz ± 3 dB
                                (Recording Level 0dB, 
according to tests)         (Recording Level -20dB, ZX Tape)

Dynamic Range.          90dB.                                                                 --- dB.                                      

Serviced and maintained.
All mechanical connections have been checked, adjusted, and lubricated.
Electronic components have been checked and adjusted;
 those that did not meet specifications have been replaced with high-quality parts.
The designed for 120V AC operation, 50/60Hz.

Included: Panasonic AG-6850H
               Panasonic AG-A600 remote control.
               VHS T120 Scotch Professional Grade Archive Tape Hi-Fi