Free UK DeliveryFinance at checkout30 Day ReturnsWorldwide DeliveryAudio Affair Facebook

Normal shipping

ATC SIA2-150 MkII Integrated Amplifier

Enquiry/price check? Click here SKU: ATCSIA2150
Ex VAT: £3,020.83

ATC’s manufacturing expertise and high standards make the SIA2-150 MK2 a perfect match for ATC speakers. It also performs flawlessly with other hi-fi speakers.

Only 1 in stock - Order Now

Condition: Brand new in original retail packaging

Earn 3625 loyalty points when you order this item.

Due to an agreement with the manufacturer, we are unable to sell this item online. To discuss this item, please call us on 0121 224 7300/7401 or send us an enquiry

Send us a message now

Do you have any questions on this item you'd like us to answer? Or have you seen it cheaper elsewhere and would like us to see if we can beat it? Send us the details below and we'll come back to you quickly (usually within 24hrs, sooner during opening hours)


Warranty length 6 Years
Brand ATC Speakers
Product Award What HiFi Award 5 Stars

Tech Specs

- Freq Response: 5Hz-200KHz (±0.1dB)
- SNR: >100dB, Crosstalk: >90dB
- Output Power: 150W into 8Ω
- Amplifier: Class A/B operation
- Inputs: 5 x RCA connections
- Outputs: Record, sub, pre-out
- Headphone jack: 6.3mm
- Remote control: Included
- Input Sensitivity: 350mV
- Input Impedance: 22kΩ
- Dimensions (HWD): 135 x 435 x 325mm
- Weight: 20kg / 44lbs

Product Description

ATC SIA2-150 MK2 is a high performance 150 Watt per channel Stereo Integrated Amplifier perfectly suited to driving ATC speakers or any other high-end speakers of your choice.

ATC Quality

ATC has an enviable heritage and a sterling reputation in designing and manufacturing no-compromise studio electronics including the power amplifiers included in all their Active monitors. Built on this experience, the SIA2-150 MK2 was designed as a powerhouse amplifier packing tremendous power with stunning detail and delicacy.

Sound Signature

The exemplary balance of features and power output in this hi-fi amplifier meets a broad and stringent set of requirements that is sure to impress both discerning audiophiles and music enthusiasts. It has a sound signature that is unwavering in midrange candour and fluidity. The extremely low distortion delivers solidity and precision of the stereo sound stage recreating the full presence of the recording.

Subtle & Tender

An exceptionally subtle and temperate performer, SIA2-150 carries across the poised serenity of recorded dynamics with sensitivity and inner detail by reducing distortion and non-linearities to levels well below audibility. The simple and direct signal path within the pre-amp stages preserves subtle low-level data and ensures that the whole pre/power amplifier combination remains neutral and free from colouration.

FET Power Amplifier

The output power of 150W is sufficient to reproduce well-recorded material from Rock, Pop, Classical or Jazz genres at realistic levels. As designers of the world’s most sophisticated drive units, ATC has a unique insight of what’s needed to accurately drive a genuine loudspeaker load. The grounded source FET power amplifier, which is also used in all ATC Active monitors, provides high current and damping to fully control any passive monitor.

Class AB Solid State

SIA2-150 is a Class AB solid-state amplifier offering a significant amount of warm Class A bias. It uses the same gain-reduction and protection circuits that ATC packs into its bi/tri-amp active speakers to prevent clipping at high output levels which can damage loudspeaker drivers.

Proudly Minimalistic

Proudly retro-looking and minimalist, the titanium-anodized aluminium front panel of the amp has only basic inputs, volume wheels along with a standby button. An easy-to-use remote control is included as standard meeting contemporary expectations.

Press Reviews

  • 'SIA2-150 is a multi-talented amp that works incredibly well across genres and can hold your attention for hours on end… Sturdy design, hugely emotive and convincing sound, sensational timing and dynamics.' (What Hi-Fi Magazine September 2008)

  • 'We're constantly praising the natural, emotive tone of ATC's speakers and the SIA2-150 sounds like it has been cut from the same cloth. This amp allows for a wonderfully open soundstage through which detail can shine.' (What Hi-Fi Magazine September 2008)

  • 'The amp displays great power, drive and determination as the track builds up. Not only are the edges of notes superbly defined, but there's great texture and feeling behind each one.' (What Hi-Fi Magazine September 2008)

  • 'The ATC produces a spine-tingling connection between listener and music, not just with rock, but whatever your musical poison. ATC has set the bar extremely high with the sensational SIA2-150, and that's no mean feat.' (What Hi-Fi Magazine September 2008)

Customer Reviews

  • Mark

    20 Sep 2018

    True reference state of the art amp
  • Write Your Own Review

    Write a Review

    • 1 star 2 stars 3 stars 4 stars 5 stars
      1 Star 2 Star 3 Star 4 Star 5 Star


Contact Details

UK Local Rate Number
0844 50 403 50

Sales Landline
0121 224 7300/7401

Customer Services Landline
0121 224 7350/7351

As Featured On

Featured In

Mobile Site

Copyright © Audio Affair (Alexander Michael LTD) 2006-2020. Vat No. 913183835. All rights reserved.