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Radiotehnika Sigma 1.01 bookshelf speakers
  • Radiotehnika Sigma 1.01 bookshelf speakers — photo 2
  • Radiotehnika Sigma 1.01 bookshelf speakers — photo 3
  • Radiotehnika Sigma 1.01 bookshelf speakers — photo 4
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bookshelfRadiotehnikaL082%

Radiotehnika Sigma 1.01 bookshelf speakers

f3≈42 Hz (bass 8/10) · 25–125 W · bookshelf, 2-way, 1×200 mm, port front · HF ±2 dB · slightly warm; energetic (spec.); load: low; detail 6/10 (spec.); near-wall ok · room 15–28 m² · mid

61,990 RUBper pairin stock· Moscow (warehouse)

Instalment: Buy now, pay later: 0-0-10 at our expense

Delivery by: 2026-11-09

Buy on audiomania.ruCompareBook a listening session

prices and stock as of 2026-11-05

Audiomania expert verdict

A large two-way bookshelf with a 20 cm Polyglass driver and a titanium tweeter: floorstander-like 42 Hz (−3 dB) bass and an energetic, “lively” delivery — for rock, hard rock and metal “without mush”. 8 Ω, an easy load: works with RTM01/RTM02 and Premiera A2/A3, opens up with an Audiolab 6000A. Rooms of 13–25 m², on stands; the ±2 dB treble switch tunes it to the room. AI draft, under review

Ask about Radiotehnika Sigma 1.01

Will it suit your amplifier or room, what else to buy, what to compare with.

03

In brief

Best if you are looking for:

  • rock, hard rock and metal “without mush” — a specialist calls it excellent for dense genres AI draft, under review
  • deep, dense bass for a bookshelf: 42 Hz (−3 dB) from a 20 cm Polyglass driver AI draft, under review
  • rooms of 13–25 m² — from 13 m² (front port) up to 25 m² “fills it completely” AI draft, under review
  • an easy 8 Ω load: comes alive already with Radiotehnika RTM01/RTM02 and Premiera A2/A3 AI draft, under review
  • ±2 dB treble trim for the room and your hearing — “the slight treble lift is a lifesaver for me” AI draft, under review

Keep in mind:

  • plenty of bass: one owner tames it with tone controls, “demanding on placement” — use stands, not a niche AI draft, under review
  • the titanium tweeter does not forgive bright recordings — the “−” switch position helps AI draft, under review
  • at low volume bass control depends on the amplifier (a Denon PMA-600 “may not cope”) AI draft, under review
  • a large bookshelf, 47.5 × 28 × 29.7 cm, 13.5 kg — needs 58–68 cm stands AI draft, under review
04

Product DNA

L082%

A structured sound passport: every value carries a source and a confidence.

Tonal balance
slightly warmreview0.5
Delivery character
energeticAudiomania specialist0.75
Bass depth
8calculated1
Bass control
7Audiomania specialist0.75
Detail resolution
6Audiomania specialist0.5
Plays loud
not enough data to calculate
Load difficulty
1/10 (low)calculated0.5
Drive difficulty
lowAudiomania specialist0.75
Amplifier topology fit
not enough data to calculate
AV receiver OK
yescalculated0.5
Subwoofer need
music: not needed; cinema: optionalcalculated1
Placement sensitivity
5calculated0.5
± 1

Alternative value

  • 7 customers0.25

    «Требовательна к размещению» (покупатель, Ступино)

Distance to rear wall
25–50 cm (min 20)calculated0.5
± 1

Alternative value

  • 40–60 cm (min 30) calculated0.5

    Если порт всё же задний: {20, 30–50} + 10 см за S04 ≥ 8

Near-wall OK
yescalculated0.5
Cable gauge
2.5–4 mm² (min 1.5)calculated0.5
Cable termination
bare wire, banana, spade, pinspec sheet0.75
Use scenarios
ideal: Home stereo; good: Rooms under 12 m², Dense, fast music, Vocal and acoustic, Vinyl system; acceptable: Long sessions, Quiet evening listeningcalculated0.5
Optimal room area
15–28 m² (10–35)calculated0.5
Tier
midcalculated1
What else you need
amplifier, speaker cable, standscalculated1
05

Sound profile

  • Bass8/10calculated

    too few models in the band for a percentile

  • Detail6/10Audiomania specialist

    too few models in the band for a percentile

  • Soundstage7/10Audiomania specialist

    too few models in the band for a percentile

  • Microdynamics6/10review

    too few models in the band for a percentile

  • Emotionnot yet auditioned

  • Analyticity6/10Audiomania specialist

    too few models in the band for a percentile

  • Versatilitynot yet auditioned

  • Ease of drive10/10calculated

    too few models in the band for a percentile

Scores are relative to other models of the same category and price band (60–100k ₽). An empty bar means not yet auditioned.

06

What the experts say

  • «Это прозрачный на ВЧ, тёплый, избегающий стерильных замашек звук, который вменяет себе всеядность»

    Stereo.ru, 2025 Read the review

  • «Полочники Sigma 1.01 отличаются от напольников только глубиной баса, характер у них идентичный»

    Аудиомания · Мир Hi-Fi Read the review

07

AI summary of expert reviews

from 2 professional sources

Experts most often note:

  • warm, transparent-on-top, omnivorous sound AI draft, under review
  • fast, plentiful bass — the character of the floorstanding Sigma 1.02 is “identical” AI draft, under review

Occasional remarks:

  • the titanium tweeter is sharp-ish on bright recordings — “−” treble helps AI draft, under review
  • a single finish (Black Ash) AI draft, under review
08

Sound character

The Sigma 1.01's character is “lively speakers for lively music”: an energetic delivery and fast, plentiful bass from the 20 cm long-throw Polyglass driver. AI draft, under review[3]

Bass is deep for a bookshelf (42 Hz at −3 dB) and fast: “in the lows the Sigma 1.01 is faster and bassier”, “no worse in speed” than Klipsch floorstanders; for one owner there is even “too much” of it. AI draft, under review[4]

The midrange is delivered “softly, comfortably, hiding no detail” (Stereo.ru); a specialist: “better in midrange delivery” than the Klipsch R-600F. AI draft, under review[2]

Treble — a titanium dome in a waveguide: “transparent on top”, but sharp-ish on bright recordings — Stereo.ru recommends the “−” position. Less detail and air than studio active monitors. AI draft, under review[3]

It does not fall apart in dense genres: “handles metal and hard rock excellently, without mush, without excess sibilance”. AI draft, under review[1]

09

Use scenarios

Suits:

  • home stereo in 13–25 m² on stands AI draft, under review
  • rock, hard rock, metal — “without mush” AI draft, under review
  • affordable and vintage 8 Ω amplifiers: RTM01/RTM02, Premiera A2/A3, Myryad AI draft, under review
  • 5.1 front pair with a Radiotehnika subwoofer (a real owner) AI draft, under review
  • bright or dead rooms — the ±2 dB treble switch AI draft, under review

Less suited to:

  • near-field and desk — “quite large bookshelves” AI draft, under review
  • maximum detail and treble clarity — a specialist honestly rates the Swan D200 higher AI draft, under review
  • quiet listening with a weak amplifier — bass control will suffer AI draft, under review
10

Technologies and construction

  • 20 cm long-throw Polyglass mid/woofer

    What it is: A Polyglass composite cone (paper with a glass coating), long excursion; one driver covers bass and midrange.

    Practical benefit: “Balanced midrange and confident bass”; “keeps control and articulation in dynamic passages” — specialist: “faster and bassier”.

  • 25.4 mm titanium tweeter in a waveguide

    What it is: A 25.4 mm titanium dome; waveguide with a phase plug.

    Practical benefit: “Clarity and transparency”, “precision and detail” — Stereo.ru: “transparent on top”, but on bright recordings “will not spare your ears”.

  • ±2 dB treble level switch

    What it is: A ±2 dB tweeter level switch.

    Practical benefit: Tuning to the room and your hearing: “works noticeably but gently” (Stereo.ru); an owner with reduced HF hearing: “the slight treble lift is a lifesaver for me”.

  • Front-firing reflex port

    What it is: A reflex cabinet; the port fires forward (per a specialist; not stated in the table).

    Practical benefit: Less dependence on the distance to the rear wall — “not so fussy about placement”.

  • Up-to-21 mm MDF cabinet with internal bracing

    What it is: MDF walls up to 21 mm thick with internal partitions; Black Ash finish.

    Practical benefit: Lower resonance — “structural stability” and a clean sound picture (description).

11

Amplifier requirements

Recommended power

no data

Practice band for 22 m² at average level: 39–66 W

R-AMP-POWER · 1.0.0+c1.0.0 · confidence 0

Load difficulty
1/10 (low)calculated0.5
Preferred amplifier character
No character preference yet — we recommend auditioning the pairing.

Suits:

  • most modern AV receivers

Calculator: is the amplifier enough

12

Recommended system connection

To get the most from the system we recommend:

Speaker cable

Gauge
2.5 mm²
Recommended length
up to 17.4 m per channel
Termination
bare, banana, spade, pin

For 3 m per speaker at 4.8 Ω, 0.43 mm² is enough; the Audiomania standard is 2.5 mm². Radiotehnika Sigma 1.01 has screw terminals: both bananas and bare wire fit.

R-CABLE · 1.0.0+c1.0.0

In stock now

  • Inakustik Premium LS bulk speaker cablefits

    1,050 RUB · in stock

    Why

    For 3 m per speaker at 4.8 Ω, 0.43 mm² is enough; the Audiomania standard is 2.5 mm². Radiotehnika Sigma 1.01 has screw terminals: both bananas and bare wire fit.

  • Radiotehnika Volna SP2.5 bulk speaker cablefits

    429 RUB · in stock

    Why

    For 3 m per speaker at 4.8 Ω, 0.43 mm² is enough; the Audiomania standard is 2.5 mm². Radiotehnika Sigma 1.01 has screw terminals: both bananas and bare wire fit.

  • Radiotehnika Volna SP2.5 Banana finished speaker cablefits

    9,690 RUB · in stock

    Why

    For 3 m per speaker at 4.8 Ω, 0.43 mm² is enough; the Audiomania standard is 2.5 mm². Radiotehnika Sigma 1.01 has screw terminals: both bananas and bare wire fit.

13

Room placement

Minimum distance to the rear wall
20 cm; recommended 25–50 cm
Distance between speakers
2.5–2.5 m
Toe-in
10–15°
Recommended stand height
≈ 63 cm
bass reflex
front

Radiotehnika Sigma 1.01: needs ≥ 20 cm from the wall (ideally 25–50), 2.5–2.5 m apart, toe-in 10–15°. Give the wall distance for an exact verdict.

R-PLACEMENT · 1.0.0+c1.0.0

Near-wall placement
yescalculated0.5
Placement sensitivity
5calculated0.5
± 1

Alternative value

  • 7 customers0.25

    «Требовательна к размещению» (покупатель, Ступино)

From the specialists' experience:

  • The front port and the treble switch help “fine-tune the sound to the room” — put them on 58–68 cm stands, not in a closed niche.[2]
  • Plenty of bass: one owner trims it with tone controls and calls the model “demanding on placement” — keep it out of corners.[1]
  • Benefits from wide spacing: “you will especially like it if you can space the speakers wider”.[1]

Compatible stands in stock

  • Radiotehnika T6 speaker standsgood

    19,990 RUB · in stock

    Why

    Radiotehnika Sigma 1.01 on Radiotehnika T6 (660 mm) puts the tweeter at 1.0 m — seated ear level (1 m). The 150×170 mm plate under a 280×297 footprint is stable; load 13.5 of 30 kg.

  • Wharfedale ST1 speaker standsgood

    22,539 RUB · in stock

    Why

    Radiotehnika Sigma 1.01 on Wharfedale ST1 (592 mm) puts the tweeter at 0.96 m — seated ear level (1 m). The 151×210 mm plate under a 280×297 footprint is stable; load 13.5 of — kg.

14

Recommended right now

over the 45-product sample

In-stock, current models only; refreshed with prices (2026-11-05). Not indexed.

  • Radiotehnika RTM01 network integrated amplifieradequate

    38,990 RUB · in stock

    Why

    Radiotehnika Sigma 1.01: 8 Ω nominal — Radiotehnika RTM01 is rated for loads from 4 Ω, compatible. Radiotehnika RTM01 delivers ≈57 W into 8 Ω; the practice band for Radiotehnika Sigma 1.01 in 22 m² at an average level is 39–66 W. Adequate.

  • Audiolab 6000A integrated amplifieradequate

    61,990 RUB · in stock

    Why

    Radiotehnika Sigma 1.01: 8 Ω nominal — AudioLab 6000A is rated for loads from 4 Ω, compatible. AudioLab 6000A delivers ≈55 W into 8 Ω; the practice band for Radiotehnika Sigma 1.01 in 22 m² at an average level is 39–66 W. Adequate.

  • Audiolab 7000A integrated amplifieradequate

    104,880 RUB · in stock

    Why

    Radiotehnika Sigma 1.01: 8 Ω nominal — AudioLab 7000A is rated for loads from 4 Ω, compatible. AudioLab 7000A delivers ≈77 W into 8 Ω; the practice band for Radiotehnika Sigma 1.01 in 22 m² at an average level is 39–66 W. Adequate.

  • Cambridge Audio EXA100 integrated amplifierideal

    249,999 RUB · in stock

    Why

    Radiotehnika Sigma 1.01: 8 Ω nominal — Cambridge Audio EXA100 is rated for loads from 4 Ω, compatible. Cambridge Audio EXA100 delivers ≈110 W into 8 Ω against a 39–66 W practice band for Radiotehnika Sigma 1.01 in 22 m² — the headroom that gives bass control and low-volume detail.

rules version 1.0.0+c1.0.0

15

Audiomania ready systems

Assembled by the rules from in-stock products around this model; prices as of 2026-11-05.

16

Comparison with similar models

  • How it differs from ELAC Debut B6.3 bookshelf speakers

    Radiotehnika Sigma 1.01 bookshelf speakers:

    • Low-frequency limit: 42 Hz vs 48 Hz
    • Nominal impedance: 8 Ω vs 6 Ω
    • HF level adjustment: 2 dB vs none

    ELAC Debut B6.3 bookshelf speakers:

    • Height: 339 mm vs 475 mm

    The sound difference is not confirmed by sources — specs only.

    Radiotehnika Sigma 1.01 is a tier above ELAC Debut B6.3 (mid vs entry).

    Full comparison →
17

Specifications

Main

Nominal impedance
8 Ω
Low-frequency limit
42 Hz (-3 dB)
± 1

sources disagree

  • 42 Hz spec sheet0.75

    Вторая строка таблицы с тем же ключом: «42 Гц - 25 к Гц» без допуска

High-frequency limit
25,000 Hz
Recommended amplifier power
25–125 W
Ways
2
HF level adjustment
2 dB

Construction

Enclosure
bass reflex, port: frontAudiomania specialist
± 1

sources disagree

  • bass reflex spec sheet1

    Строго по таблице: фазоинвертор, положение не указано

Cabinet
МДФ, 21 mmAudiomania
Wall-mount points
nocalculated
Finishes
Black Ash
Grille
removable: yes, magnetic: no

Drivers

Bass drivers
1 × 200 mm, композит Polyglass
Tweeter
25.4 mm, titanium, waveguide
± 1

sources disagree

  • 25.4 mm, titanium spec sheet1

    Строго по таблице (без волновода)

Tweeter height from base
371 mmcalculated

Connection

Terminals
one pair, screw

Dimensions

Dimensions (W×H×D)
280 × 475 × 297 mm

Weight

Weight
13.5 kg (each)

Box contents

In the box
Тканевые защитные решетки
Warranty
24 months
18

Documents

19

FAQ

›Which amplifier for a 14–16 m² room?
An Audiomania specialist: 8 Ω and high sensitivity — “suits a wide range of amplifiers, e.g. the Radiotehnika RTM02. The best option is the Premiera A3, also consider the Audiolab 6000A”. Premiera A1/A1VU/A2 “pair well” but will not unlock the full potential; of those, the A2.
›Will the Radiotehnika RTM01 drive it in 16 m² (rock, blues, louder than average)?
Yes: “the amplifier will open the speakers up in your conditions — a detailed, spacious sound”. To “get the maximum” — the Audiolab 6000A (class AB).
›How does it handle metal — from Aria to Slayer and Death?
“Handles metal and hard rock excellently, without mush, without excess sibilance. The Premiera A3 is an excellent amplifier for it” (specialist, 2026-01-25, 20 m² room).
›Sigma 1.01 or Klipsch RP-600M II for 13 m² at 2 m (rock, metal, Aiyima A07 Pro)?
The specialist recommends the Sigma 1.01: “it has a front port and a ±2 dB treble control, which helps fine-tune the sound to the room”. 13 m² is the lower part of the 10–35 m² rule range.
›Will it work properly with an old Yamaha AV receiver?
Yes: “the speakers are 8 Ω, it will work correctly” (specialist). By rule the load is easy (1/10); a receiver rated for 8 Ω is fine.
›How does it play quietly — will quality drop, will there be too much or too little bass?
Specialist: with a Denon PMA-600 “the amplifier is not the most powerful and may not cope with bass control at low volume” — the result depends on the amplifier. This model has plenty of bass (an owner trims it with tone controls), so at low volume it will stay rather than vanish.
›Which amplifier with a USB input (for a computer)?
Specialist: Leak Stereo 130; cheaper — Premiera A1S: “per reviews and our tests… has enough power reserve for various speakers, e.g. the Radiotehnika Sigma 1.01”.
›At what level is the 42 Hz lower limit specified?
“Minus 3 dB” (Audiomania specialist, 2025-11-12) — as stated in the first row of the table: 42–25 000 Hz (−3 dB).
›Which stands does it need?
By rule a 58–68 cm stand (tweeter at 95–105 cm seated): the Radiotehnika T6 (66 cm) fits. Top plate at least 17 × 18 cm. Specialist: “quite large bookshelves” — 13.5 kg each.
›How does it differ from the floorstanding Sigma 1.02?
“Only in bass depth — the character is identical” (Audiomania blog): the same 20 cm Polyglass driver, titanium tweeter and treble switch. The 1.01 has one woofer, 8 Ω, 25–125 W and needs stands; the 1.02 has two woofers, 6 Ω and suits 18–35 m². AI draft, under review
›Does it need an amplifier?
Yes: these are passive speakers and need a stereo amplifier or receiver. See “Amplifier requirements” and “Recommended now”.
20

Customer reviews

4.9 of 5 · 9 ratings

  • Николай С., Зеленоградск · 2026-09-28Excellentverified purchase

    Так довелось, долгие годы просидел на S-90. Не аудиофил, просто любитель разной музыки. Для эксперимента, скачал в очень хорошем качестве трек, слушал много раз и с удовольствием. Наверное это говорит о хорошем звуке у этих колонок. Так получилось, что за очень дёшево достался саб тоже от радитехники, и вот он точно лишним не будет. Тем более я собираю звук 5.1 в комнату. Все колонки будут от радиотехники.

  • Эдуард Т., Ступино · 2026-03-25Goodverified purchase

    Хорошая, качественная акустика. Интересный, ни на что не похожий звук. Подойдёт не каждому и не для любого тракта. Требовательна к размещению. Обязательно слушайте перед покупкой. Для меня низких частот слишком много, приходится корректировать регулятором тембра. Очень порадовал корректор АЧХ. Я уже не так хорошо слышу высокие частоты, поэтому лёгкий подъем ВЧ для меня просто спасение! В целом отличный универсальный вариант для разных музыкальных жанров и для частого прослушивания.

  • Сергей Т., Пугачев · 2026-02-14Excellentverified purchase

    Очень грамотные консультанты! Быстро прошло оформление заказа! Также в указанный срок был отправлен заказ транспортной компанией,заказ пришел в указанный срок и без повреждений,также все было упаковано и скомплектованно как по заводу!

22

Audiomania expert opinion

The Sigma 1.01 is the bookshelf version of the Sigma 1.02: per the Audiomania blog “they differ only in bass depth, the character is identical”. Specialists call it “faster and bassier”, “more dynamic” than the KLH Model 3 and note it handles metal and hard rock “without mush, without excess sibilance”. AI draft, under review[4]

Stereo.ru hears a sound “transparent on top, warm”, but warns that the titanium tweeters “will not spare your ears” on bright recordings — the “−2 dB” switch fixes that. If maximum detail and treble clarity matter most, a specialist honestly notes that the active Swan D200 is ahead there. AI draft, under review[3]