TCL’s TV Series: What QM, X, RM and the K/L Letters Mean

TCL’s US TVs split by backlight first: QLED sets with no zone count, QD-Mini LED (the K-generation Mini LED sets), and the newer SQD-Mini LED and RGB-Mini LED (the L-generation ones). Within a range, the number after QM rises with dimming zones and brightness on TCL’s own spec sheets, and X marks TCL’s flagship.

TCL’s TV menu lists 13 Google TV series, and it still sells both Mini LED generations side by side, so a QM7K and a QM7L are different backlights, not two sizes of one set. Each of the 12 4K Google TV series pages we read lists both Dolby Vision and HDR10+.

What the letters and numbers mean

We found no key to the names on TCL’s pages, but the pattern reads from them:

Part of the name	What it marks on TCL’s pages	Examples
QM	TCL’s Q Class sets with a Mini LED backlight (the QM8L spec sheet heads itself “TCL Q Class (QM8L)”)	QM6K, QM7L, QM8L, QM9K
X	The flagship: the X11L page heads its table “Flagship Specifications”	X11K, X11L
RM	RGB-Mini LED	RM9L
Q without M	QLED with no Mini LED backlight	Q3K, Q651G
A300	Design sets: NXTVISION with a flush wall mount (A300W) and the picture-frame Designer Series (A300L)	A300W, A300L
Number	The step within a range: higher means more zones and brightness on TCL’s sheets	QM6K → QM9K
Final K or L	The generation: the K Mini LED sets are QD-Mini LED; the L Mini LED sets carry the SQD and RGB backlights TCL introduced for 2026	QM7K vs QM7L

The series side by side

From TCL’s US store, read 23 October 2026. Zones and brightness are TCL’s “up to” figures. List is TCL’s regular price for the smallest size; sale is what TCL’s store charged that day for the same size.

Series	Backlight, as TCL lists it	Dimming zones	Brightness, TCL’s label	Refresh	Sizes	List, smallest size	TCL sale, 23 Oct
Q3K	QLED, direct LED, 1080p	not listed	not listed	not listed	32–43 in	$169.99	$139.99
Q651G	QLED	not listed	not listed	120Hz, VRR to 144Hz	43–98 in	$299.99	$239.99
A300W	QLED, edge-lit	not listed	not listed	120Hz, VRR to 144Hz	55–85 in	$1,299.99	$699.99
A300L	QLED, edge-lit	“N/A”	“N/A”	144Hz	55–75 in	$999.99	$899.99
QM6K	QD-Mini LED	500	“High HDR Brightness”	144Hz	55–98 in	$649.99	$549.99
QM7K	QD-Mini LED	2,800	HDR 3,000	144Hz	55–115 in	$1,199.99	$749.99
QM8K	QD-Mini LED	3,800	HDR 5,000	144Hz	65–98 in	$2,499.99	unavailable
QM9K	QD-Mini LED	6,000	HDR 6,500	144Hz	65–98 in	$2,999.99	$999.99
X11K	QD-Mini LED	14,000	HDR 6,500 nits	144Hz	85–98 in	$9,999.99	$2,999.99
QM7L	SQD-Mini LED	2,100+	3,000 peak nits	144Hz	55–98 in	$1,199.99	$799.99
QM8L	SQD-Mini LED	4,000	6,000 peak nits	144Hz	65–98 in	$2,499.99	$1,199.99
X11L	SQD-Mini LED	20,000+	10,000 nits	144Hz	75–98 in	$5,999.99	$2,999.99
RM9L	RGB-Mini LED	5,600+ (16,000+ colour zones)	9,000 peak nits	144Hz	85–115 in	$7,999.99	$5,999.99

Every set in the table runs Google TV. The 55-inch QM7K and every QM8K size were marked unavailable on 23 October; the table keeps their list prices. TCL’s store carried a Halloween sale banner that day, so the sale column will move.

QLED: no zone count on the sheet

The Q3K is the 1080p entry set, 32 to 43 inches, with a direct LED backlight and two HDMI inputs. The Q651G is TCL’s 4K QLED from 43 to 98 inches. The A300W and A300L are design sets: the A300W mounts flush to the wall, the A300L is the 2026 picture-frame Designer Series, and both list edge-lit backlights. None of these four pages lists a dimming-zone count; the A300L table has the row and fills it with “N/A”.

QD-Mini LED: the K range

TCL’s own comparison chart on the QM7K page lines the four QM sets up by zones: up to 500 on the QM6K, 2,800 on the QM7K, 3,800 on the QM8K and 6,000 on the QM9K, with brightness rising alongside. The QM6K also drops from Audio by Bang & Olufsen to an Onkyo 2.1 speaker system, and lists Game Accelerator 240 where the QM8K and QM9K list 288. The X11K, at 85 and 98 inches, lists up to 14,000 zones. TCL’s QM6K appears in our explainer on how Mini LED and OLED make light, which covers what a zone does and where halo comes from.

SQD-Mini LED and RGB-Mini LED: the L range

TCL describes SQD-Mini LED as a blue Mini LED backlight shining through a denser “Super Quantum Dot” layer and an Ultra Color Filter, aimed at 100% of the BT.2020 colour range. RGB-Mini LED instead replaces the white backlight with red, green and blue LEDs; the RM9L is TCL’s set.

Between the two QM sets, the QM8L lists nearly twice the zones and double the peak brightness of the QM7L, a WHVA 2.0 Ultra panel where the QM7L has HVA 2.0 Pro, and the TSR AI Pro processor. On the QM7L only HDMI 1 and 2 run at 4K 144Hz; inputs 3 and 4 stop at 4K 60Hz, which matters to anyone connecting two consoles and a PC at 120Hz or above. The QM8L lists all four at 4K 144Hz. The X11L (affiliate link to Amazon, opens in a new tab) tops the range at up to 20,000+ zones and 10,000 nits, from 75 inches.

Two generations, one ladder that does not line up

A higher model number does not mean more zones across the two generations. The QM9K, from the K range, lists more than the SQD-based QM8L, 6,000 against 4,000, and on 23 October TCL’s store had the 65-inch QM9K on sale below the 65-inch QM8L. The two ranges also label brightness differently, “HDR 6500 Brightness” on one and “Up to 6000 Peak Nits” on the other, so those figures are not a like-for-like measurement. What the L sets add, on TCL’s account, is the SQD colour layer.

HDR, OS and gaming

Each 4K Google TV series page we read names both Dolby Vision and HDR10+. That separates TCL from Samsung’s 2026 range, where none of the 11 spec pages we searched lists Dolby Vision, and from Sony’s Bravia range, where none of the ten spec tables we read lists HDR10+; our HDR10+ and Dolby Vision explainer covers which services use which. Each Mini LED series lists 144Hz native, and the Q651G and A300W list 120Hz with VRR up to 144Hz.

TCL also sells Fire TV versions outside the Google TV menu, among them the QM64L, a QD-Mini LED Q Series listing 144Hz and local dimming without a zone count, unavailable in every size on 23 October. For how these compare with sets from other makers on outlets’ review scores, see our shortlist of the best-reviewed TVs. TCL’s soundbars, from the 2.0 S45H to the 7.1.4 Q85H, are set out in our TCL soundbar explainer.

Questions people ask

What is the difference between TCL QM7L and QM8L?

Both are 2026 SQD-Mini LED sets at 144Hz. TCL lists the QM8L at up to 4,000 dimming zones and 6,000 peak nits against the QM7L’s 2,100+ and 3,000, a WHVA 2.0 Ultra panel, the TSR AI Pro chip, and four 4K 144Hz HDMI inputs where the QM7L has two. The QM8L starts at 65 inches, the QM7L at 55.

What does SQD-Mini LED mean on a TCL TV?

Super Quantum Dot Mini LED. TCL says it keeps a blue Mini LED backlight but passes the light through a denser quantum dot layer and an Ultra Color Filter, aiming at 100% of the BT.2020 colour range. The QM7L, QM8L and X11L use it.

What is the difference between TCL QM6K and QM7K?

Dimming and sound, on TCL’s own chart. The QM6K lists up to 500 zones, “High HDR Brightness” and an Onkyo 2.1 speaker system; the QM7K lists up to 2,800 zones, HDR 3,000 brightness and Audio by Bang & Olufsen. Both list 144Hz, Google TV and Dolby Vision.

Which has more dimming zones, the TCL QM9K or the QM8L?

The QM9K, on TCL’s pages: up to 6,000 zones against the QM8L’s 4,000. The QM9K is from TCL’s QD-Mini LED K range; the QM8L carries the SQD-Mini LED that TCL introduced for 2026. A higher model number does not mean more zones across the two generations.

Do TCL TVs support Dolby Vision and HDR10+?

The 4K ones we checked do. All 12 TCL 4K Google TV series pages we read, from the Q651G QLED to the RM9L, name both Dolby Vision and HDR10+. The 11 Samsung 2026 spec pages we searched list HDR10+ and not Dolby Vision, so this is one place the brands differ.

What is TCL RGB Mini LED?

A backlight made of red, green and blue LEDs instead of white or blue ones. TCL’s RGB set is the RM9L, which it lists at up to 5,600+ dimming zones, 16,000+ colour zones and 9,000 peak nits, in 85 to 115 inches.