Disclaimer: The following opinions are mine and mine only. They have been arrived at using my gear(and some of Shokunin’s), in my home, with my listening preferences… These opinions in no way reflect those of AudioCircle. Thank you.
I want to start off by saying that this was one of the most enjoyable sessions ever. Those in attendance were Shokunin, Sa-dono, Cryotweaks, John Casler, and Pin (new member from AVS). All great guys who are great company to hang out with!
Also, I’d like to give thanks to everyone who brought over some goodies to play with…
Frank Van Alstine: Special thanks for allowing us the opportunity to audition the Biro L/1s.
Shokunin: SPECIAL thanks for bringing over a Sony XA-777ES SACD player, a Shunyata Hydra w/ Elrod power cord, Cardas speaker cable (not sure which model), Zu Druid monitors, TG silver power cords, Bolder Cable Nitro interconnects and a bunch of SACDs to listen to.
Sa-dono: Thanks for bringing over the Channel Islands passive preamp.
Cryotweaks: Thanks for bringing over a second set of plug and play Bybees for speakers.
John Casler: Thanks for bringing over the battery powered Audioquest speaker cables.
Pin: Thanks for joining us for the listening session. I hope you enjoyed all the gear and music.
Room: approx 12' W x 14' D x 8 1/2' H
Placement: speakers placed about 8' apart on 24" Sanus MDF stands 3' away from the back wall and away from the corners. listening position is approx 6-7' triangulated from the speakers and 4-5' from the back wall. right side of the room has a sliding door that is covered by drapes. left side of the room opens up into the dining area. floors are carpeted. ceiling has popcorn treatment.
Equipment:
Preamp: Rogue Audio 99 Magnum
Amps: Aragon Palladium II monoblocks w/ TG silver power cords
DAC: Perpetual Tech P-3/A w/ Modwright Lev 1; P-1/A upsampler jitter reduction
Sources: Rotel RDD-980 CD transport; Sony XA-777ES SACD player/transport
Power: Quantum Symphony Pro, ElectroClears, Shunyata Hydra w/ Elrod power cord
Interconnects: Onix Blues, ZuCable Disco, Bolder Nitro
Speaker cable: Onix SP-200, Cardas, Audioquest battery powered cables
Speakers: Onix Reference 1 from
www.av123.com ; Biro L/1 from
www.avahifi.comSub: Onix Rocket UFW-10 Alpha version
Music: Norah Jones, Diana Krall Live in Paris, Tears for Fears Greatest Hits, Dave Brubeck Time Out, Kasey Chambers Sampler, Coldplay Parachutes, Dave Matthews Crash, Vivaldi Four Seasons Gil Shaham, Yellow, Tom Petty and the Heartbreakers Echo, some Irish choral track that Cryotweaks brought (not sure of the name).
Biro L/1 loudspeaker impressions:
These speakers arrived double boxed with the speakers packed in the inner box suspended by stryofoam corner protectors inside the outer box. The speakers look exactly as they do on the
www.avahifi.com website. The natural real wood oak veneer finish is very good and should match most decor. The enclosure of the exposed tweeter looks rather industrial. Overall shape seemed kind of awkward. I don’t think they are going to win any beauty contests for their overall appearance. The cabinet seems to be constructed w/ ¾” MDF. The Biros use dual gold plated binding posts allowing for bi-wiring or bi-amping if one so desires. Enough on appearances, though…More importantly, what do they sound like?

After I had given them sufficient time to break in and given my ears sufficient time to assimilate to the Biro sound, I found that these speakers sound very nice! They image extremely well. In fact, this is the best imaging speaker I’ve heard in my setup! The image is just so well focused and 3 dimensional. Also the exposed tweeter gives the speaker more airiness and transparency that is breathtaking. I truly appreciated the Biros strength when it came to imaging. But as good as the Biro tweeter is (and it is excellent), it never let me forget that I was listening to a metal dome tweeter. I have never been a fan of metal dome tweets but the implementation of the Biro tweeter is one of the best I’ve heard w/ metal domes. Very smooth and revealing. There was a hint of ringing and harshness at 90+dBs. The imaging and airiness of the Biro was even better than that of my Onix Ref 1s which already do a fantastic job on the qualities. When switching back and forth between the Biro and Ref 1, it is easy to tell that the Ref 1 tweeter is mounted in the baffle.
The Biro mids were good but sounded a bit lean on all material I’ve played on them. This was more apparent when conducting A/B comparisons w/ the Ref 1s. The leanness in the mids seemed to disappear as the volume was turned up. We did most of our listening between 80-95dBs.
The bass performance from the Biros was also quite good compared to most monitors. They are spec’d to extend down to 58 Hz to 20 kHz + and -2 dB in free space and - 3 dB at 42 Hz under typical listening conditions. In listening to the speakers, I found this to indeed be true. In comparison to the Refs, the bass was not quite as tight. This was apparent on track 5 “East of the Sun, West of the Moon” upright bass solo (about the 1” mark) from Diana Krall’s Live In Paris CD. In listening to the Ref 1s, I seldom find the need to use a sub for music. The Biros definitely benefit a great deal when I switched on the sub.
The Refs 1s and Biros are both outstandingly fine sounding speakers that deliver music in different ways. The Refs are more forward in their presentation giving one the impression of front row seating. The Biros on the other hand give me the impression that I am sitting a bit further back. This is evident when listening for attack on both speakers. The Refs excel at attack while the Biros do not have quite the bite and edge in this regard. The decay of the Biros seems to fall off sooner as well. Both are equally enjoyable to listen to, but very different in their approach.
I have included my scorecard rating the 2 speakers. (i had the chart in excel and it didn't come over quite right)

Biro L/1 Ref 1
Sonics Treble 4.0 4.5
Mids 4.5 5.0
Lows 4.0 5.0
Imaging 5.0 4.5
Airiness/Transpareny 5.0 4.0
Attack/Decay 4.0 5.0
Overall presentation 4.5 4.5
Subtotal 31.0 32.5
PhysicalCabinet construction 4.0 5.0
Finish 4.0 5.0
Aesthetics 2.5 5.0
Subtotal 10.5 15.0
Total 41.5 47.5
In conclusion, I would like to applaud VanAlstine and AV123 for giving us such wonderful speakers to choose from. Both are excellent (better than most every other speaker I've heard in the price range), each with their own strengths. I will mention that the Hydra and XA-777ES dramatically improved the sound of both speakers. The Hydra brought more blackness to my setup while the XA-777ES used as a transport improved all aspects of the sound. Tighter bass, cleaner highs, and improved clarity. Both speakers are able to resolve changes in upstream components and sounded tremendous with the addition of these 2 pieces with my nod still going to the Refs by the same small margin as above.
The Zu Druid monitor did show up and we did give them a listen but I felt that there was definitely something wrong with the speakers. The Druids are supposed to be identical to the Zu Druid floorstanders which I heard at Sotantar’s place a while back with the exception of bass extension due to a smaller cabinet. These sounded NOTHING like those. These were chesty, congested and boxy sounding in the midrange. Not anything like what we heard at Sotantar’s. It is possible the problem may be break in but we played a few tracks of Billy Idol Rebel Yell to put them through the paces and there was no improvement. I’m going to check w/ Zu to see if they might have any thoughts on this cuz Sotantar's Druids sounded very capable and certainly on par w/ some of the finer speakers I've heard. These Zu monitors were a far cry from anything fine I've heard.
I hope all the other attendees had as much fun as I had yesterday and I hope those of you who have taken the time to read this review have enjoyed it as well! Happy listening!
