Pioneer S-1EX loudspeaker:
Page 2 The S-1EX's large soundstage representation was wide and tall, though less deep than a warmer, richer speaker would make it, and at first I missed that depth. However, I have no way of knowing exactly how far behind the orchestra the choir stood during the recording of, say, Sibelius' Kullervo, by either Sir Colin Davis and the London Symphony (SACD/CD, LSO Live LSO0574) or Robert Spano and the Atlanta Symphony (SACD/CD, Telarc SACD-60665). In the former, the entry of the men's chorus in Part 2 is thrilling, the deep voices spread broadly across the back of the soundstage just behind the detailed and somewhat sleek strings and winds. The Spano at first seemed even more spectacular in its greater depth for both chorus and orchestra, but over time I realized that the prices paid for that depth were wind placements that were less than natural and slightly muted upper strings. The Pioneers made explicit all the spatial and tonal differences between these two recordings while also making both quite satisfying. With such variables, it was hard to find fault with the S-1EX.

With smaller-scale recordings, the S-1EX did everything I asked. In fact, it was eminently clear that Patricia Barber's voice on Modern Cool (SACD/CD, Mobile Fidelity UDSACD 2002) should not be softer or louder than one specific volume setting, and at that setting the piano, bass, and all the stars were in perfect alignment for a stunningly realistic presentation. Solo guitar, too, was clean and ripe, with all the details of fingers on strings in appropriate measure. In fact, I found myself gravitating toward music rich in transients so that I could revel in the Pioneer's abilities to reveal all the details.

Listening to a new reissue of the 1973 Decca/HEAD recording of Roberto Gerhard's brilliant and blistering adaptation of Camus' The Plague, with speaker Alec McGowan, Antal Dorati, and the National Symphony Orchestra and Chorus (CD, Explore EXP0005), I was continually startled by the intimacy of the vocal parts and the power of the orchestra. McGowan's matter-of-fact narration was chilling—through the S-1EXs, he seemed to speak to me from a seat in my own room, as all the plague-driven panic and chaos raged outside. The S-1EX's midrange and treble are great.

The S-1EX also had excellent bass extension and detail, and, when called on, could deliver a terrific wallop. It did sound a bit bass-shy at times, but that was due in part to what I heard as a highly damped tuning of the drivers and cabinet. This contributed in no small measure to the speaker's overall transparency and openness throughout the entire audioband—I wasn't distracted by any spurious muddiness or boom. For example, wide-range organ recordings sounded glorious, with granitic, stygian pedal tones. It was only when I listened to low timpani and bass drums that this overdamping seemed to dull the impact and presence a wee bit. All I had to do was transfer all bass below 50Hz to a JL Audio f113 subwoofer and it was clear that the Pioneers could do a little better. Sure, this wasn't fair—the JL is a dedicated bass transducer with an adaptive room equalizer that has improved the bass of every speaker I've used it with. Still, the best is the enemy of the good, and the S-1EX is better in the bass than underdamped speakers that spew woolly bass all around the room.

A comparison with my resident B&W 802D speakers was interesting. Central imaging and transparency were equally good. The Pioneers threw a wider, more forward soundstage, but one more limited in depth than the B&Ws'. Joel Fan's piano on his eponymous recital disc (CD, Reference RR-106) was pearly clear and fairly forward through the Pioneers, but I heard more of the instrument's body wood and more of the ambient space with the B&Ws. The Pioneer give the impression of greater transient quickness and brilliance, but a careful comparison suggested that this might have been the consequence of its overall balance, which can seem tilted toward a treble balance higher than the B&W's. Despite all these impressions, Julia Fischer's violin sounded remarkably similar through both speakers.

I did most of my listening with a pair of Bel Canto REF-1000 monoblocks that, fortuitously, I'd recently installed in my system. Andrew Jones had used this class-D amplifier for his impressive demos at HE2006, and we agreed that the match was symbiotic. Although I tried other amps with varying degrees of success, I kept coming back to the Bel Cantos. The Classé CA-3200 and the Mark Levinson No.433 provided more midbass slam without adding any bloat, and sweetened the extreme treble, but the basic honesty of the S-1EX's midrange remained unaffected. The downside of both the conventional amps was their emphasis of the S-1EX's slightly puddingy reproduction of bass drums and low electric bass. This was probably the only flaw in the Pioneers' otherwise faultless performance, and mating them with the Bel Canto amps minimized it with no further damping or rolling-off of the bass.

Conclusions
I never bought into "trickle down economics" before, but Pioneer and Andrew Jones have applied the audio technology they learned in making the TAD Model 1 to a much less expensive speaker that has retained a disproportionate amount of the TAD's performance. Sure, $9000 is not pocket change. On the other hand, the S-1EX is fully competitive with higher-priced speakers that have spent time in my listening room, such as the B&W 802D ($12,000/pair) and the now-discontinued Revel Ultima Studio ($15,000/pair)—and with anything I've heard in demos. In regard to ease of placement in a domestic room not exclusively dedicated to listening, the S-1EX surpassed all other speakers I've used. This means that anyone who buys the Pioneer is more likely to enjoy optimum results than with more finicky speakers.

If you've read this far, you know that I love the Pioneer S-1EX. It is a full-range speaker with great transparency, dynamic potency, and truly neutral tonality. The speaker's ease of placement and setup are aided by its ability to immediately and easily reveal how it is affected by changes in position—when the Pioneers are in the right places, you'll know it. Then you'll stop thinking about the S-1EX and all its technological features, because you'll be listening to the music. Ladies and gentlemen, we have a winner.