Sony TC-K 770 ES

Data

Sony Cassette Deck TC-K770ES

General:

• Manufacturer: Sony
• Model: TC-K770ES
• Type: Cassette deck
• Remote controllable: Yes, Sony RM-J701 et al.
• Color: Black
• Dimensions (WxHxD): 430 x 135 x 350 mm
• Power: 220 V, 23 Watt
• Weight: 6.7 kg
• Year of manufacture: 1991-92
• Original price: 850 DM

Inputs and outputs

• Outputs: 2

Stereo Cinch (gold-plated)

• • Headphone jack 6.3 mm, gold-plated

• Inputs: 2

Stereo Cinch Stereo Cinch CD Direct

Technical data:

• System: 4-track, 2-channel stereo
• Tape speed: 4.76 cm / s
• 3 heads: 1 x record / playback, 1 x erase head
• Motors: 1 x Reel, 1 x Capstan (Quartz Direct Drive), 1 x Mechanical
• Tape type: Ferro IEC I, Cr02 IEC II, Metal IEC IV,
• Noise reduction: B, C, HX-Pro
• Frequency response: 20 Hz to 21,000 Hz (metal band IV) Dolby NR off
• Distortion factor: 1.0
• Signal-to-noise ratio: 76 dB (Dolby C)
• Uniformity: 0.025 % (WRMS), 0.05 % (DIN weighted), 0.11 % DIN unweighted (Ang. see Stereo 12/91, p.46)
• Input: 77.5 mV (Line)
• Output: 0.44 V (Line)

Features

• Dual-Capstan in closed tape run with 2 pressure rollers and tone shafts
• Cassette compartment: motor controlled
• Bias controller: yes
• Level- controller: yes, both controllers visually controllable (test tone- calibration),
• additional 3 bias settings
• Backband control: yes

MPX filter: yes Counter Memory: yes

• Electronic real-time counter
• AMS - title search
• Quartz controlled direct drive
• Adjustable headphone output
• CD- Direct- jacks, gold plated
• Remote control sensor built in, remote controllable with above mentioned remote control and Sony system remote controls
• Timer pre-installation for recording and playback
• Display can be switched off (with Sony RM-J701 remote control)
• Illuminated cassette compartment

Remarks

Previous model:

• Sony TC-K 750 ES

Successor model:

• Sony TC-K 790 ES

Other models in the same series:

• TC-K 370
• TC-K 470
• TC-K 570
• TC-K 670
• TC-K 770 ES
• TC-K 870 ES
• TC-K 970 ES

Pictures

Reports

• Stereo 12/1991: top class, 89 % (sound: 95 %, practicality 83 %, workmanship 70 %, features 75 %), Stereo recommendation: 3 stars, excellent

The TC-K770ES already belonged to the top class at that time and leaves several top decks that are only a few years older clearly behind it, at least in terms of sound. However, over the years, a few design weaknesses have become apparent, such as the failure of the control for the drive buttons, which have sent many a K770 to the e-scrap despite looking as good as new.