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1. GX-280-DSS Deck
   Records discrete 4-channel, stereo in 1 direction, plays back discrete 4-channel, stereo in 2 directions; monitor off separate playback head; 4 glass and crystal ferrite heads; 7 1/2, 3 3/4 ips; 7-inch reel; 1 set DIN, 1 set RCA 4-channel line inputs; 1 set DIN, 1 set RCA, 1 set phone-plug 4-channel outputs; tape selector switches equalization; recommended for use with 3M 150 or 203 tape with SRT; 4 VU meters; automatic reverse in playback only; stereo sound-on-sound;  20Hx17Wx10D - $ 799.95.
2. 1730-DSS Deck
   Similar features to Model GX-280-DSS, but plays back stereo in only 1 direction-does not have tape equalization; recommended for use with 3M 150 tape; does not have automatic reverse; 18Hx16.5Wx 9.5D. $ 399.95.

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• 711 Deck
  Records and plays back discrete 4-chanpel, and stereo in both directions; monitor off separate playback head; 7 1/2, 3 3/4 (or 15, 7 1/2) ips; 10-inch reel; 4 mike, 4 low-impedance, 4 high-impedance inputs; 4 low-impedance outputs; internal bias and equalization adjustments only; 4 VU meters; automatic reverse on playback only (20-Hz reverse signal sensing); mike/line mixing - Under $ 2.000.

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1. CX 744 Deck
   Records and plays back discrete 4-channel, and stereo in one direction; monitor off separate playback head; 15, 7 1/2, 3 3/4 ips; 10-inchreel; 81/4-inch phone-plug outputs; 4 1/2-inch phone plug, 4 RCA plug outputs; separate tape bias and equalization switches; recommended for use with Scotch 207 tape; 4 VU meters; 241/2Hx19Wx9D - $ 2,495.
2. CX 844 Deck
   Similar styling and features to Model CX 744. - $ 2,995.
3. GX 744 Deck
   Similar styling and features to Model CX-744, but does not include 15 ips; 21H x 19W x 9D. .: - $ 1,995.
4. SX 844 Deck
   Similar styling and features to Model SX 744. - $ 2,395.

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• Model 7140 Deck
  71/2, 4% ips; 7-inch reel; records and plays back discrete 4-channel and stereo in one direction; monitor off separate playback head; mike, line, DIN inputs; line, DIN, 1 set 4-channel headphone outputs; tape selector switches bias; recommended for use with regular and low-noise tapes; 4 VU meters; includes multisync function (for recording tracks separately, but in sync with each other), echo, sound-on-sound,sound-with-sound; tape/source monitor; 3 motors; automatic shutoff; 17 3/4H x 16 7/sW x 6 3/4D. $ 499.95.

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• Model 804 Deck
  Records and plays back stereo and discrete 4-channel in one direction; separate monitor head; 71/2, 33/4 ips (15 ips optional); 10-inch reel; mono/stereo switch; 2 mike, 1 line, 1 phonoin-put (all optional); headphone output (optional); 2 VU meters (optional)., - $ 1,050.

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1. Model 1401 Deck
   Discrete 4-channel, one-direction stereo record and playback; 71/2, 3% ips; 7-inch reel; separate monitor head; 4 mike, 4 auxiliary inputs; 4 line, 2 4-channel headphone outputs; tape selector switches bias; 4 VU meters; 17H x16x7D - $ 449.95.
2. Model 1405 Deck
   Similar features to Model 1401; except no separate monitor head, knob instead of slide-type level controls; 7H x 16W x &D - $ 329.95.

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• Model QT-6600 Deck
  Records and plays back stereo in both directions and discrete 4-channel; monitor off separate playback head; Th, 3% ips; 7-inch reel; 1 set 4-channel inputs and output; 4 VU meters; pause control; front/rear headphone outputs; automatic reverse in record and playback; 18Hx17Wx8D - $ 599.95.

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• 494 Deck
  Records and plays b&ck stereo in both directions and discrete 4-channel; separate monitor head; 71/2, 3%, 1%1ps; 7-inch reel; 4 line, 4 mike inputs; 4 line outputs; 2 sets 4-channel headphone outputs; tape selector switches equalization; recommended for use with Realistic Supertape; 4 meters; 16H x 141/2W x 65/sD. .1 - $ 299.95.

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• Model QD-5500 Deck
  Records and plays back stereo in 2 directions, discrete in one; separate monitor head; 71/2, 3% ips; 7-in. reel; 4 line, 4 mike inputs; 4 line, 1 set 4-channel headphone outputs; tape selector switches bias; 4 VU meters; automatic reverse in record and playback; DIN jack for 2-channel tape record/playback; standby switch for monitoring tape in forward-record mode (switch is moved to "record" to put sound on tape); optional remote control; 21 %H x 16%W x 10 5/16D - $ 749.95.

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• TC-277-4 Deck
  Records and plays back discrete 4-channel, and stereo in both directions; 71/2, 3%, 1 % ips; 7-inch reel; 4 auxiliary inputs; 4 mike inputs; 4 line outputs; 1 stereo headphone output; tape selector switches equalization; recommended for use with low-noise/high-output tape; 4 VU meters; sound-with-sound; sound-on-sound; automatic shutoff; locking pause control; scrape flutter filter; 7 11 /16H x 15 11 /16W x 15 7/16D. - $ 399.95.
• TC-388-4 Deck
  Similar features to Model TC-277-4 except 71/2, 3% ips; monitor off separate playback head; tape selector switches bias and equalization; mike/line mixing and pan pot for use in 2-chan-nel recording; mike attenuator; automatic total mechanism shutoff; sound-on-sound, but no sound-with-sound; 193/4H x 16 7/16W x 87/8D. .rr - $ 499.95.
• TC-854-4S Deck
  Records and plays back discrete 4-channel and stereo in both directions; monitor off separate playback head; 15, 7 1/2, 3 3/8 ips; 10-inch reel; 4 auxiliary, 4 mike inputs; 4 line, 1 stereo headphone output; tape selector switches equalization; recommended for use with low-noise/ high-output tape; 4 VU meters; logic control; automatic program scanner; Syncro-Trak; mike/line mixing; accessible bias and equalization adjustments; plug-in head block assembly; remote control; vari-speed pitch control; scrape flutter filter; automatic total mechanism shutoff; electrical speed change; 22H x 17 11/32Wx10D. - $ 1,795.

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1. Model 4041 XQ Deck
   2 channels record, 2 or 4 playback; separate monitor head; 7 1/2, 3 3/4, 1% ips; 7-inch reel; 2 mike, 2 auxiliary, magnetic phono, ceramic phono inputs; auxiliary output; recommended for use with low-noise tape; 2 VU meters; 2 channels of amplification, 10 watts RMS per channel; 2 built-in speakers; 2 speaker outputs; headphone output; remote electronic start/ stop; sound-on-sound; sound-with-sound; echo; 6V2H x 151/2Wx 1 2 7/16D., - $ 569.50.
2. Model 6041 XQ Deck
   Stereo, mono record; 4-channel, stereo, mono playback; separate monitor head; 7Vz, 3%, 1% ips; 7-inch reel; 2 mike, phono (ceramic or magnetic), line input; mike/line mixing; line outputs; headphone output; 2 VU meters; limiter switch; recommended for use with low-noise tape; remote electronic start/stop; sound-on-sound; sound-with-sound; echo; 3 speaker outputs; 61/2Hx151/2Wx123/8D. - $ 629.80.

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• Model 2340 Deck
  Records and plays back discrete 4-channel, and stereo in one direction; 71/2, 3% ips; 7-inch reel; monitor off separate playback head; 4 mike, 4 line inputs; 4 line, 1 headphone output; Simul-Sync; tape selector switches bias/equalization; recommended for use with low-noise/ high-output and standard tapes; 4 VU meters; 183/4Hx17 5/16Wx83/4D - $ 759.50.
• Model 3340 Deck
  Records and plays back discrete 4-channel, and stereo in one direction; monitor off separate playback head; 15, 7!/2 ips; lO-inch reel; 4, mike, 4 line inputs; 4 line, 1 headphone output; tape selector switches bias, equalization; Simul-Sync; recommended for use with low-noise/high-output and standard tapes; 4 VU meters; mike/line mixing; 2OHx17Wx8D - $ 849.50.

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• RS-740US Deck
  Records and plays back stereo in one direction and discrete 4-channel; monitor off separate head; 71/2, 3% ips; 7-inch reel; 4 mike, 4 line inputs; 2 4-channel outputs (line; scope); 1 set 4-channel headphone outputs; tape selector switches equalization, AC bias (160 kHz); recommended for use with high-output tapes; 4 VU meters; front/rear separation controls; tape source monitor; front/rear record channel selector; 153/4Hx17Wx81/4D. $ 449.95.

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• Quad/Sonic 2 + 2 Deck
• 4-channel or stereo in one direction, play only;  7 1/2, 3 3/4, 1 ips; 7-inch reel; 11H x 161/2W x 6V4D; 1 output for each head. - $ 249.95.

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• Model PT 884 Deck
  4 channels record, play; 2 channels record, play in 1 direction; 71/2, 3%, 1 % ips; 7-inch reel; 2 auxiliary 4-channel inputs; 2 mike inputs; 4 VU meters; stereo, 4-channel line outputs; tape selector switches bias, equalization; 16V4H x 15W x83AD.(Price not available).

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• 6154 Deck
  Records stereo in 1 direction; plays back stereo in 2 directions, and 4-channel; monitor off separate playback head; 71/2, 33A, 1 V& ips; 7-in. reel; 2 mike, 2 high-level line inputs; fixed line, controlled line, stereo headphone outputs; tape selector switches bias; recommended for use with Scotch 203 or 207 tape; 2 VU meters; tape/ source switch; 161/2H x 131/2W x 61/2D - $ 299.95.

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Thanks to its original 8-track configuration (which meant stereo over four lengths of a given cartridge tape) the closed-loop cartridge has evolved quickly to a format that readily accommodates discrete "quadriphonic" sound (four-channel sound over two lengths of a given cartridge tape). Few will record in the "quadriphonic" mode, but several will record in stereo. As such, they can record matrixed material prior to its being decoded. On playback, the stereo output of such machines "may be" fed to a decoder to recover the original four channels.

• Anmerkung : Hier gibt es gleich 2 völlig unsinnige Besonderheiten. Die QS/SQ Experten hatten herausgefunden, daß die Matrix codierten 2-Kanal Bänder bei der Wiedergabe so viele Phasen-Auslöschungen hatten, daß da nur Mist runter kam. Weitherin ist hier von richtigem Hifi schon gar keine Rede mehr. Die ganzen 8-Track Geräte hatten alle ein Problem mit dem Gleichlauf wegen der rückseitigen Rutsch-Beschichtung der Cartridge-Bänder. Im Auto fiel das nicht weiter auf, bei 55 Miles im Cabrio sowieso nicht, da war nur laut gefragt. Doch zuhause war es lästig, das mit dem Jaulen.

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• CR-SO-SS Recorder
  Records and plays back stereo and 4-channel; manual or automatic track change; fast forward; 4 mike, 4 line inputs; 4 line, 4 speaker, 1 stereo headphone output with front/rear channels switch; 1 set 4-channel DIN jacks; 30 Hz to 16,000 Hz ±3 dB frequency response; less than 2.0% distortion (1,000 Hz); 7 watts RMS per channel in 4-channel; 47 dB S/N; 1 record/ playback, 1 erase head; 4 VU meters; 51/2 x 19% x11 3/16.(Price not available).

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• TD8QW Deck
  Manual or automatic track change; stereo/4-channel indicator lights; simulates 4-channel from 2-channel sources.(Price not available).

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• CD-8-4 Player
  Manual or automatic track change; manual eject, automatic eject, or continuous play; 4 line outputs; 4Hx83/4Wx101/2D - $ 114.95.

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• MC-70A Player
  Manual and automatic track change; repeat; continuous play; automatic 2-channel /4-channel switching; 1 set 4-charinel line outputs; 4 channels of amplification, 3 watts RMS per channel in 4-channel; 50 Hz to 12,000 Hz frequency response; better than 45 dB S/N; less than 0.25% wow and flutter; 4 speakers supplied; 51/4Hx 14 5/16Wx81/2D., - $ 149.95.

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• TX-420 Deck with Decoder and Amp
  Manual and automatic track change; repeat/ continuous switch; on/off matrix decoder switch; simulates 4-channel from 2-channel sources; classical/popular switch; connects into system via receiver output; 2 inputs (tuner, aux); 1 set 4-channel outputs; 15 watts RMS per channel; 30 Hz to 20,000 Hz power bandwidth; 20 Hz to 25,000 Hz frequency response; bass, treble, volume controls; 0.5% harmonic distortion; 0.8% IM distortion; 65 dB S/N high-level inputs; 43/4Hx165/16Wx113/4D - $ 299.95.

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1. TA400 Player
   Manual and automatic track change; continuous play; back-panel switch allows playing of 4-channel tapes in stereo; 4-channel/2-chan-nel indicator light and automatic select; 1 set 4-channel outputs; 41/2H x 9%W x 81/2D. - $ 99.95.
2. TA640 Recorder
   2 channels record, 4 play back; manual and automatic track change; continuous play; automatic eject; "One/All" switch for automatic eject at end of program or end of tape when in record mode; fast forward; pause control; elapsed time counter; 2 mike inputs, mikes supplied; stereo/4-channel mixing switch; 2 VU meters; 1 stereo phono input; 1 stereo output, 1 set prewired output cables; 51/sH x 16W x 10D. - $ 189.95.

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• 8+ Deck
  Manual and automatic track change; manual, and end-of-track or end-of-cartridge automatic shutoff; 1 set 4-channel outputs; 4%H x T2W x 8ViD - $ 89.95.

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• TPQ-144D Player
  Automatic track change; continuous play; 4 line outputs; 3%H x 111/4W x 10D - $ 119.95.
• TRQ-154D Recorder
  Automatic track change; repeat; continuous play; automatic shutoff at end of programs; 2 channel record; 2 level meters; 2 mikejnputs; 2 line inputs; time counter; pause button; fast forward; 4 line outputs; stereo headphone output; 4%Hx15%Wx11D - $ 199.95.

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• 4ED-1203 Deck
  Manual or automatic track change; 4 line, 2 4-channel headphone outputs; stereo/4-channel switch; 4-channel indicator light; 4 5/16H x 10 3/16Wx97/8D - $ 109.95.
• 4ED-1205 Recorder
  2 channels record, 2 or 4 playback; 2 VU meters; 2 mike, 2 phono inputs; manual or automatic track change; automatic shutoff after x each program or end of tape; 4 line, 2 4-channel headphone outputs; pause control; elapsed time indicator; fast forward; record-ready light; 4%Hx16 9/16x11D - $ 229.95.

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• RK-48A Player
  Manual or automatic track change; stereo/4-channel operation; continuous play/repeat selector; 4 outputs; 30Hz to 10,000 Hz ± 2 dB response; 41/2Hx91/2Wx 101/2D - $ 99.95.
• RK-84 Player
  Manual or automatic,track change; stereos-channel operation; 4 outputs; 50 Hz to 8,000 Hz response; 43/4Hx87/8Wx81/2D - $ 69.95.

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• TD-85 Player
  Manual or automatic track change; less than 0.3% wow and flutter; 50 Hz to 8,000 Hz ± 5 dB frequency response; 1 set stereo, 1 set 4-channel outputs; 4%Hx 10 7/16Wx95/8D - $ 99.95.

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• S930 Player
  Manual and automatic track change; repeat; continuous play; automatic stop; automatic 2-channel/4-channel switching; 45 dB S/N; 30 Hz to 10,000 Hz ± 3 dB; less than 0.25% wow and flutter; 45/8Hx101/2Wx101/4D., - $ 99.95.

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1. RS-844US Player
   Manual and automatic track change; continuous play; 4 line outputs; manual 2-channel /4-channel selector; 41/iH x 111/4W x 91/2D - $ 99.88.
2. RS-855US Recorder
   Records 2 channels, plays back 2 or 4 channels; 2 VU meters; 2 mike, 2 line inputs; manual and automatic track change; continuous play; / switchable automatic eject; 4 line outputs; 1 stereo headphone output; locking fast forward; 4Hx17Wx11D. - $ 169.95.

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• QT-2100 Deck
  Manual or automatic track change; program repeat switch; stereo/4-channel operation; front/rear headphone outputs; front/rear line outputs; 5 11/16H x 16 15/16W k 12 15/16D - $ 249.95.

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• Q-800 Player
  Manual or automatic track change; automatic shutoff with indicator; 4 line outputs; 4H x 7W x 10D - $ 89.95.

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• RD 8200 Deck
  Manual or automatic track change; repeat; continuous play; automatic eject; fast forward; 4 RCA phono jack outputs; 43/4H x 13W x 123/8D. .: - $ 149.95.

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1. TC-258 Player
   Manual and automatic track change; 4 line outputs; fast forward; 4 1/16H x 8%W x 9/16D. .: - $ 119.95.
2. TC-824CS Player
   Manual or automatic track change; 4 stereo inputs (2 aux, 2 cer. phono); 4 speaker terminals; continuous play; bass boost switch; 4 built-in amps, 5 watts RMS per channel; 4 speakers supplied; stereo/4-channel operation; master level control; individual balance controls; 43AH x153/4Wx10D. - $ 299.95.

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1. DMQ 2784 Player with Decoder
   Cartridge section: Manual or automatic track change; stereo/4-channel operation. Main section: Designed for EV," SQ matrix decoder systems, will also handle discrete; connects into tape record/play or tape monitor functions; 1 set 4-channel tape inputs; 2 speaker outputs; 12.5 watts RMS per channel; 30 Hz to 35,000 Hz power bandwidth; 25 Hz to 35,000 Hz response; cut and boost controls for bass, treble; left/right, front/rear balance controls;loudness switch; tape monitor; less than 1.0% harmonic distortion; 4%H x 161/8W x 81/2D.  - $ 229.95.
2. EQ3755 Player
   Manual and automatic track change; repeat; continuous play; 4 line outputs; less than 0.3% wow and flutter; 45/8Hx91/8Wx95/8D. - $ 99.95.

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• RS-858US Recorder
  Manual and auto track change; continuous play; switchable automatic eject; records and plays 2- or 4-channel; 4 VU meters; 4 mike, 4line inputs; 4 line outputs; 1 set 4-channel headphone outputs; timing counter, resets immediately when hew program starts; lock-in fast forward; 4 3/4Hx 21Wx 11D - $ 259.95.

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• CH-751 Player
  Manual and automatic track change; 1 set 4-channel tape outputs; 0.25% wow and flutter; 50 Hz to 10,000 Hz response; 6H x 83/4W x 12D. - $ 119.95.

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• 1547 Player
  Manual or automatic track change, stereo/4-channel switch - $ 79.95.

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1. 8054 Player
   Manual and automatic track change; automatic shutoff; 1 set 4-channel outputs; 30 Hz to 15,000 Hz frequency response; 0.25% wow and flutter; 43/4Hx133/8Wx93/4D - $ 119.95.
2. 8060 Recorder
   Records 2 channels, plays back 2 or 4; manual or automatic track change; automatic shutoff with automatic eject after 1 or all tracks; 2 VU meters; 2 mike, 2 line inputs; 1 set 4-channel outputs; 1 stereo headphone output; pause; fast forward; 2-channel/4-channel selector; discrete/matrix selector; digital time counter; 47/8Hx133/8Wx101/2D.v - $ 219.95.

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Although no standard has been established for "quadriphonic" cassettes, at least two models of four-channel cassette machines have been announced, and other models in prototype form have been demonstrated at hi-fi shows. No commercial four-channel cassettes have yet been released.

To record matrixed quadriphonic material onto any stereo cassette machine, feed the program prior to its being decoded into the machine. On playback, the stereo output may be fed to a decoder to recover the original four channels.
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• Anmerkung : Philips hatte die Patenet unter der bedingung kostenlos vergeben, daß die Grundprinzipien und Abmessungen der CC-Kassette unter allen Bedingungen eingehalten werden mußten. Die Hersteller konnten nicht drauf los entwickeln und produzieren, sie mußten das Lizenzabkommen unterschreiben. Das Philips-Patent lief ab 1962/63 etwa 20 Jahre.

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• 307 Deck
  Records and plays back discrete 4-channel, and stereo in two directions; automatic reverse in stereo playback only; 3 motors; bias switch for low-noise, chromium dioxide tapes; automatic shutoff disengages drive, shuts unit off; 4 VU meters; 4 mike, 4 line inputs; mike/lifie mixing; 1 headphone output; 4 low-impedance outputs; 51/2Hx163/4Wx 11 VaD.'.Under $500.

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• Model 4CD-1680 Deck
  Records and plays back 4 channels using 8 tracks; 30 Hz to 15,000 Hz frequency response; 25 dB crosstalk (in 4-channel, at 1 kHz); 55 dB S/N with ANRS noise reduction in, 50 dB S/N with ANRS out; 0.1% wow and flutter; normal/ low noise/chromium dioxide tape selector; tape equalizer switch; memory counter. ...........(Price not available).

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These units include a new wideband-response pickup and a demodulator for reconstituting the original four channels multiplexed onto the CD-b disc. The units also may be used for playing ordinary stereo discs and matrixed discs, the latter function requiring a suitable matrix decoder. Theoretically, any turntable and arm can be used to play Quadradiscs, although lead capacitance may be a limiting factor with some CD-4 cartridges.
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Prices shown on these pages are manufacturers' or importers' suggested list prices, and may be subject to regional variation or various amounts of discount from store to store. Prices of imported items are based on mid-1973 currency valuation levels.
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• AT126 Dual Magnet Cartridge
  Designed for mono, stereo, matrixed 4-channel and discrete 4-channel; Shibata stylus; 15 Hz to 45,000 Hz frequency response; 25 dB separation (at 1kHz).......... - $ 49.95.

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1. 4000 Dl Pickup
   Induced field magnet principle; specially ground stylus presents .1 mil to groove wall - $ 74.95.
2. 4000 Dll Pickup
   Induced field magnet principle; specially ground, nude-diamond stylus presents .1 mil to groove wall  - $ 99.95.
3. 4000 Dill Pickup
   Similar to model Dll except includes miniature nude-diamond stylus - $ 149.95.
4. 598 III Player
   Manual changer; 45, 331/3 rpm; speed adjust control; includes Model 4000 Dill pickup; mass balanced tone arm; antiskate adjustment; adjustable lighting for setting stylus on record; -90 dB rumble; less than 0.1% wow and flutter; includes walnut base, lucite cover; 8H x 17%W x151/sD - $ 399.95.

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• Model 240 Changer
  Includes BSR turntable; built-in CD-4 demodulator............ - $ 150.

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• 4VC-5244 Changer
  Automatic changer; 45, 331/3 rpm; antiskate tone-arm force adjustments; built-in CD-4 demodulator; uses JVC 4MD-20X cartridge and stylus............. - $ 249.95.
• 4MD-20X Cartridge & Stylus
  Shibata stylus; 10 Hz to 60,000 Hz.. - $ 69.95.

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• QDC-1 Stereo /CD-4 Cartridge
  Cartridge includes 3 interchangeable stylus tips (conical, elliptical, Quadra-point/CD-4); new "electronic" cartridge; 5 Hz to 50,000 Hz ± 2dB frequency response; 30 dB separation at 1 kHz, 20 dB at 10 kHz....... - $ 89.

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1. SL-701 Changer
   Built-in CD-4 demodulator; 78, 45, 331/3 rpm; CD-4 disc indicator light; cueing control; anti-skate control; to be used with Model EPC-460C semiconductor cartridge; dust cover and walnut base included - $ 139.95.
2. SL-800 Changer
   Similar features to Model SL-701; 1 set 4-chan-nel auxiliary inputs; rear panel carrier level and separation controls; 4 auxiliary outputs; rear panel cartridge level controls; Model EPC-460C cartridge included; less than 0.15% wow and flutter; better than 35 dB rumble.. - $ 199.95.

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• Model 780/4QD Cartridge
  10 Hz to 50,000 Hz response; Quadrahedral stylus.- $ 125.

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