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ATC SIA2-150 Mk2

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ATC SIA2-150 Mk2 stereo integrated stereo amplifier
ATC SIA2-150 Mk2 front ATC SIA2-150 Mk2 back
£3625
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ATC SIA2-150 Mk2 - Stereophile "Class A Recommended Components 2013"

ATC SIA2-150

ATC SIA2-150 Mk2 - Stereophile "Class A Recommended Components 2013"
  • Stereophile "Class A Recommended Components 2013"
  • ATC's beefy (44 lbs) SIA2 integrated amplifier ($5000) puts out a claimed 150Wpc and is hand-built in the UK. It has five RCA inputs, but no phono stage, balanced inputs, or onboard digital capability requiring USB or S/PDIF connection; in two words, it's old school. And I love it.
  • The SIA2 exhibits all the virtues of a first-quality solid-state integrated amplifier.
  • To sum up the SIA2: excellent performance, good value for money, and a great match for ATC's SCM 40 speakers.
  • And Monheit's voice was just plain wonderful to listen to—the ATC is a great amplifier.
 
ATC SIA2-150 Mk2 Hi-Fi i Muzyka review

ATC SIA2-150

Hi-Fi i Muzyka logo
  • First, I listened for a few minutes a Mac (n.r. McIntosh MA7000), to have a reference point, and then dived for the cabinet to change the call. The first second brought a big surprise. I had to make sure that all cables definitely hit where it should be, because the speakers flowed focused like a laser wave and strong as real absinthe energy.
  • If not enough power, it will be loud, but the music runs out of purity and resolution. But not here, because next to the pulsating
    energy most impressive detail and precision can be heard. Every little thing is served with great care, is a separate event.
  • This amp plays differently than McIntosh MA7000, which in its price class (two times higher) I consider to be one of the few patterns. But I put an equal sign between them.
 
ATC SIA2-150 Mk2 What Hi-Fi review

ATC SIA2-150

ATC - What Hi-Fi 5 Stars
  • This amp allows for a wonderfully open soundstage through which detail can shine.
  • 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.
  • The ATC produces a spine-tingling connection between the listener and the music.
  • Sturdy design
  • Hugely emotive and convincing sound
  • Sensational timing and dynamics
 
ATC SIA2-150 Mk2 What Hi-Fi (Russia) review

ATC SIA2-150

ATC - What Hi-Fi 5 Stars
ATC SIA2-150 Mk2 What Hi-Fi (Russia) review
 
ATC SIA2-150 Mk2 The Absolute Sound! review

ATC SIA2-150

The Absolute Sound ogo
  • Its sonic signature is an unwavering midrange forthrightness and fluidity. Its neutral to warmer tonal balance allows for the most critical listening, yet doesn’t cross the threshold into the starkly clinical. Musical fundamentals and overtones are expressed like continuous liquid waves of energy.
  • Bass response is excellent with precise pitch and plenty of slam"
  • Perhaps the most impressive aspect of this amp was the wide net it cast in resolving soundstaging and imaging.
  • Like the ATC, the Plinius throws its weight and balance where it’s most appreciated—in the midrange. The key differences are the slightly drier character and tighter lower end of the 9200.
 
ATC SIA2-150 Mk2 TechRadar review

ATC SIA2-150

TechRadar logo
  • Whatever you partner it with, ATC's superbly finished SIA 2-150 amplifier seems to deliver a revealing, powerful and ultimately engaging result. It offers a degree of grip that is unusual outside of separate power amplifiers, but does not let this dominate its sound.
  • Revealing, dynamic and powerful
  • Works with a wide range of speakers
  • Superb build quality and finish
  • Long manufacturer's warranty
 
TechRadar logo

ATC SIA2-150

ATC SIA2-150 Mk2 TechRadar review
  • Un vrai bonheur qui sait alterner l’énergie considérable et la froide détermination d’un appareil conçu pour rester fidèle au signal, aux
    nuances et à la chaleur d’un vecteur musical de premier ordre..
  • L’intégré ATC SIA2-150 Mk2 est un appareil remarquable de cohérence proposé à un prix tout à fait en rapport avec ses qualités. Suffisamment puissant pour amplifier un grand nombre
    d’enceintes de rendement moyen, assez polyvalent pour se faire plaisir sans sacrifier la précision, il propose une solution intégrée performante à ceux qui cherchent à la fois la fidélité au signal et la musicalité d’un appareil destiné aussi bien aux audiophiles qu’aux mélomanes.
 
What Hi-Fi? Sound and Vision 
Magazine 2/2010 
Place 1 out of 4
ATC SIA2-150: "excellent" (5 out of 5 stars)

"Group Test Winner"

"For: Sturdy design; hugely emotive and convincing sound; sensational timing and dynamics. 
Against: Nothing of note."

Tested with: Cyrus Pre XPd + 8 Power (pre-power) - Unison Research Preludio - NAIM NAC 152 XS + NAC 155 XS (pre-power)

   
   
What Hi-Fi? Sound and Vision 
Magazine 11/2008 
4 products tested
ATC SIA2-150: "excellent" (5 out of 5 stars)

At the price, What Hi-Fi felt the SIA2-150 Mk2 offered unrivalled performance, delivering a sonically neutral, clean and clear performance with enough power to drive most speakers. The remote and appearance may be a little on the minimalist side, but they get the job done and that job is done very well indeed. 

Tested with: NAIM NAC 252 + NAC 250 + SuperCAP (pre-power) - Wadia 581i se - Martin Logan Vantage

* * *

ATC SIA2-150 Mk2 Features:

  • 150 watts per channel.
  • Class A/B operation.
  • Hand built in the UK.
  • 5 RCA inputs.
  • Record, sub and pre outputs.
  • Headphone jack.
  • Remote control.
  • 6 year warranty.

Specifications

Output Power into 8 Ω: 150W
Input Sensitivity: 350mV (for 150W, 8 ohm, 1 kHz)
Input Impedance: 20k ohms
Frequency Response (-3dB): 2Hz – 400KHz
Signal to noise ratio: >100dB
Crosstalk: >90dB
THD: > 0.002%/ -95dB
Dimensions (HxWxD): 135 x 435 x 325 mm
Weight: 20kg

ATC SIA2-150 Mk2 detail ATC SIA2-150 Mk2 detail ATC SIA2-150 Mk2 detail ATC SIA2-150 Mk2 detail
“The visuals were inspired by my fondness for Art Deco industrial design as expressed in the interior design of automobile dashboards of the 30s and the visual appeal of professional electronic gear of the 50s and 60s. I have tried to give the SIA2 a modern interpretation whilst retaining some of that style.”
ATC founder/ designer Billy Woodman
 
ATC SIA2-150 Mk2 brochure
 
 
 
ATC SIA2-150 - Stereo Setup
ATC SCM 20 SL Stereo Setup
ELAC 330 CE Stereo Setup XAVIAN XN 270 Stereo Setup
330 CE XN 270 Evo
ATC SCM 40 Stereo Setup
ELAC FS 409 XAVIAN XN Carisma Stereo Setup
FS 409 XN Carisma
ATC SCM 50 SL Stereo Setup
ELAC Spirit of Music CE Stereo Setup XAVIAN XN Virtuosa Stereo Setup
Spirit Of Music CE XN Virtuosa
ATC SCM 100 SL Stereo Setup ELAC FS 509 VX-JET Stereo Setup XAVIAN XN 360 Stereo Setup
SCM 100 SL FS 509 VX-JET XN 360
 
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