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Counton Cantata Jason Kennedy looks at the matching 50-watt
integrated for our favourite CD player of 2010. Can Resolution Audio shine with its amps, too? ast year we had some bad news. Resolution Audio discontinued one of our favourite CD players, the Opus 21. The good news, however, was that it replaced it with the Cantata Music Centre, which went on to win several HFC awards in our 2010 Awards issue. Now we have the follow up, a Cantata amp in a matching box, containing a British circuit design and a less-ismore ethos. The SO suffix indicates power output, making this the least powerful solid-state amplifier we've seen at this price, so what gives?
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Power output Resolution Audio built the Cantata SO to be a less speaker-sensitive/ 66
IlfiCholce FEBRUARY 2011
more powerful version of its predecessor, the Opus 21 s30 amplifier and has achieved this by giving it a larger power supply. The new amp has four, rather than two T-network capacitors, a mains trans former that's 60 per cent more powerful and a significantly bigger heat sink - the top of the casework is solid aluminium and performs this function. Why does the heat sink change things? Because it allows the FET output transistors to be run at a higher bias and this me ans more power output. The Cantata 50's speaker terminals are a little different. They feature a third terminal for earthing the amp to the speaker, something that DNM Reson cables are designed for, if not
~ DETAILS PRODUCT: Resolution Audio Cantata 50 ORIGIN: USA
TYPE: Integrated amplifier WEIGHT:6kg DIMENSIONS: (WxHxD) 50x430x230mm FEATURES: • Power output: 50 watts • Inputs: 2x RCA phono, 2xXLR • Banana or spade speaker terminals • Remote control source & volume • Cantata-link system control DISTRIBUTOR: Redline TELEPHONE: 01268858222 WEBSITE: resolutionaudio.com
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many loudspeakers. It requires the speaker to have an internal connection to the drive unit baskets, which are electrically floating. Tannoy has induded earth terminals on some of its speakers, because the earthing idea comes from Japan, where the Scottish company have a strong following. The speaker terminals are in socket rather than binding post form to keep the metal content down in true DNM style (see Talking Point, right). Resolution Audio has not gone to the extreme of using Perspex casework, but does have aluminium oxide spacers on the FETs attached to the he at sink, in order to minimise eddy currents that are induced in metal if there is an AC field nearby. The Cantata is a dass NB integrated with only four line inputs (the Music Centre augments these with digital inputs). These inputs are indicated by a letter that shines through the attractively retro-style dot matrix display alongside the volume level. We were a little perplexed that the amp on the pramo picture shows a capitalletter, whereas our sample displays a lower case one. But it turns out that you can dedicate one input to the Cantata Music Centre which gives it priority over other inputs and displays as a capital for
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