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The A-109 is a 40-Watt integrated amplifier that adds a stabilizer for the transformer and chassis. And its symmetrical design results in excellent stereo imagery. The A-109 is among those Pioneer amps to feature the Direct Energy MOS FET transistor directly linked to the speaker output. Efficient input signal transmission with minimum distortion requires the signal path to be as short as possible. The highly efficient Direct Energy MOS FET allowed Pioneer to develop its Advanced Direct Connection, with a shorter signal path and ground line and Symmetrical Construction. This combination ensures that left and right channels are clearly separated and have the same impedance, giving ideal stereo reproduction with identical sound quality. These two design concepts ensure more stable stereo sound localization and a rich sound field.
Bought this as a replacement for my 25 year old Marantz amp on which (only) the volume control was showing signs of old-age. Read morePublished 13 months ago by geebs46
...aye, that's right, since April 2001, when I bought it after auditioning all the other cheapos in a hi-fi shop in Sydney. Read morePublished 21 months ago by Stevie Mooncat
I bought this amp not knowing a great deal about hifi, looking to purchase a fairly cheap set up. I was running wharfedale 9. Read morePublished on 15 July 2012 by Stirling
This Pioneer replaced a very old Sansui digital amp/tuner from an era when digital was new and needed to be written on the front. Read morePublished on 20 April 2012 by H G MILLICHAP
Good Product and good value for money.
I have just got one of these and I think it's powerful and of good quality. It's simple to use and it delivers. Read more
Excellent sound quality. I bought this to replace a Technics component system that is gradually failing, and the sound quality from this amplifier is a noticeable improvement. Read morePublished on 12 Feb. 2012 by Speed_King
Pioneer keep putting out good amps & this is just as good & well made as a pricey one, For the money you can't go wrong.Published on 11 Dec. 2011 by Mrs. Alison Young
My husband loves his music and so I bought this amp for him to use in his hobby shed. Pioneer is a respected name & we have found their goods to be reliable in the past. Read morePublished on 11 Jun. 2011 by Rachel Hill