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Firewall for loudspeakers

Reviewer: Srajan Ebaen
Financial interests: click here
Sources: Retina 5K 27" iMac (4GHz quad-core with Turbo boost, 32GB RAM, 3TB FusionDrive, OSX Yosemite. iTunes 14.4), PureMusic 3.02, Audirvana 3, Qobuz Hifi, Tidal Hifi, COS Engineering D1, Denafrips Terminator, Soundaware D300Ref,  AURALiC Vega, Jay's Audio CDT 2 MkII & DAC-2 SE
Preamplifier: Vinnie Rossi L2 Signature with WE 300B/VT52 or Elrog ER300B/50; Nagra Classic, Wyred4Sound STP-SE Stage II, Vinnie Rossi LIO (AVT module); April Music Stello HP100 MkII
Power & integrated amplifiers: Pass Labs XA30.8; LinnenberG Audio Liszt monos; FirstWatt SIT1 monos, SIT-3, F5, F6, F7; Goldmund/Job 225; Aura Note Premier; Wyred4Sound mINT; Nord Acoustics NC500 monos; April Music Stello S100 MkII;  Crayon Audio CFA-1.2; SAG AIO; Bakoon AMP-13R
Loudspeakers: Audio Physic Codex; Acelec Model One; Cube Audio Nenuphar; Kroma Audio Mimí; Albedo Audio Aptica; EnigmAcoustics Mythology 1; Boenicke Audio W5se; Zu Audio Druid V & VI & Submission; German Physiks HRS-120; Eversound Essence; Fram Midi 150 & 120
Cables: Complete loom of Allnic Audio ZL3000/5000 and Zu Event; KingRex uArt, Zu and LightHarmonic LightSpeed double-header USB cables; Tombo Trøn S/PDIF; van den Hul AES/EBU; AudioQuest Diamond glass-fibre Toslink; Black Cat Cable redlevel Lupo; Ocellia OCC Silver
Power delivery: Vibex Granada/Alhambra on all source components, Vibex One 11R on amps/sub, Puritan Audio Labs PSM156 & PS106-DC
Equipment rack: Artesania Audio Exoteryc double-wide 3-tier with optional glass shelves, Exoteryc Krion and glass amp stands 
Sundry accessories: Acoustic System resonators
Room: 4 x 6m with high gabled beam ceiling opening into 4 x 8m kitchen and 5 x 8m living room, hence no wall behind the listening chairs
Review component retail: $1'656/set/4

Spade or banana termination upon demand

"LessLoss are going to disrupt one of the largest-margin, complicated and bulky aspects of the audio business. We've come up with a way to connect a small set of devices to your speaker terminals which, for little money, opens the doorway to completely new performance. Results are comparable to if not better than upgrading your speaker's tweeter, its capacitors or internal wiring. But you won't tinker with any of it. What you get by using this small device is:

• much better focus. Did somebody switch out the tweeter to a much more expensive model?
• much less 'fog' in the soundstage. Did somebody replace the internal acoustic damping material?
• pure sonic colors. Did somebody redesign the crossover for improved inter-driver impulse response?
• meticulous bass control. Has the woofer's moving mass been halved?

"The new Firewall for Loudspeakers are four separate units. Each has a speaker terminal which accepts a banana or spade from your existing speaker cable. The terminal houses in a wood enclosure smaller than our existing Firewall 64X for power. From here a short highly flexible C-MARC cable umbilical extends to either banana or spade. This connects directly to your speaker terminal. One set consist of one unit for left positive, one for left negative, one for right positive, one for right negative."