Luxman LX33

Luxman Luxkit A1033

December
1 9 7 9 december 1979
1 9 8 4 1984

Part of the myriad of Luxman vacuum tube integrated amplifiers - with a twist : absolutely non-tubey looks, matte sub-panel and coloured backlit pads !

Much closer to contemporary LUXKIT units than a regular SQ-38FD - which is normal since the LX33 had a Luxkit semi-equivalent in mid-size format (but not circuit - A505) and a 99% equivalent (Luxkit A1033) which had a standard 2-gang ALPS volume pot instead of the better "blue-box" ALPS inside the LX33.

Luxman advertised a little for the A505, not at all for the A1033 but at length for the LX33, at length.
Maybe why it sold so well - or not !
Do note that LX33 is written à la Luxkit (no dash between LX and 33) which may point toward Luxkit roots, like the CL-34 (or CL34).

The LX33 was apparently exported and OEM'ed by Luxman in the USA under the FujiTech tag for the Monarchy Engineering brand - another crazy Luxman distribution scheme !


The preamp (phono) stage is a 2-stage P.C. NF circuit with a 12AX7 ; negative feedback is looped to the cathode at the 1st stage from the following plate for low distortion and high-bandwidth stability.

The driver section is a Mullar driving circuit (cathode-coupling phase-inversion circuit) and all amplifying stages are done with triodes : one 6AQ8 for the first stage and two 12AU7 for the driver.

The output section is made by a quartet of 6CA7 pentodes in push-pull with Ultra-Linear coupling ; two OY15-5KF transformers feed all.

NF tone controls (basic bass/treble, though), and "modern" features make the LX33 usable in a "modern" way : tape monitoring/dubbing, separable pre/main sections, balance and stereo/mono switch.


"To cater for the specific requirement of sophisticated audiophiles this model is designed under full command of perfect knowledge about vacuum state technology of existing tubes." - is what is written atop the model number.

This 1979 renewed call for modestly priced tube amplifiers sounds quite prescient, thirty years after the LX33 : tubes are still around with many 6CA7s and 12AX7s making music for the pleasure of our (educated) ears.



A real-life LX33 here, another one here.

The Luxkit A1033 version is visible here and the A505 sibling here.

Luxman LX33, image 1 Luxman LX33, image 2 Luxman LX33, image 3
Luxman LX33 specifications
Title Value
Tube complement : 4x 6CA7
2x 12AU7
1x 6AQ8
4x 12AX74
Rated power output : 2x 30W (4 or 8 Ohm)
2x 25W (16 Ohm)
THD : < 0,15% (8 Ohm / 1Khz / 10W)
< 0,4% (8 Ohm / 1Khz / rated output)
< 1% (8 Ohm / 50Hz...50Khz / 10W)
IMD : < 1% (8 Ohm / rated output / 60Hz : 7Khz = 4:1)
Frequency response : 30Hz...30Khz (-1dB / 8 Ohm / 1W)
Inputs & S/N ratio 2,2mV / 72dB
190mV / 92dB
PC : 180W
Dimensions : 45 x 15,8 x 32,5cm
Weight : 19kg.
List price : 138,000¥
Luxman LX33 : 3 topics
(last updated topic shows up first)
  • Luxman LX33, FujiTech A1033 literature                             (12)last updated by powerking - 07/09/2011, 01H07
  • FS: Luxman LX-33, Luxkit, A1033                             (3)last updated by Whitese - 31/07/2011, 06H50
  • luxman lx33 in the us                             (2)last updated by fstdude - 02/05/2012, 18H04
page online since : august 2007
page updated : august 2010
page type : LGT / KNB
page weight : 180.38 Kb / 0 b

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