Stereo Amplifiers Derby KS

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Living Sound LLC
(316) 634-0333
9747 E 21st North #115
Wichita, KS
Services
Home Audio

Dynatek Inc
(316) 652-0160
11124 E. 28th St. NorthSte. #102
Wichita, KS
Services
Audio / Video, Home Automation / Systems Integration / Home Networking, Home Theater, Multi-Room Audio, Security / Access Control / Surveillance / Gate Access
Brands
ELan, Niles, Nuvo, Honeywell, Apex, Yamaha, Marantz, Russound, Samsung, Phillips, Toshiba and many more.
Certifications
One or more employees at this company have achieved CEDIA Professional Certification status:- Richard Cooksey, CEDIA Certified Professional EST II

Best Buy
6700 W Kellogg Dr
Wichita, KS
 
Galaxy Audio
(316) 263-2852
601 E Pawnee St
Wichita, KS
 
Vivid Pro Systems
(316) 267-1000
227 One Half S Hydraulic
Wichita, KS
 
Audio Dimensions
(405) 843-3355
9747 E. 21st St. N, Suite 121
Wichita, KS
 
Home Technology Systems, Inc.
(316) 722-4663
8955 West Monroe CircleSte. 400
Wichita, KS
Services
Audio / Video, Home Automation / Systems Integration / Home Networking, Home Theater, Lighting Control, Multi-Room Audio
Brands
Crestron, Integra, Escient, Lexicon, Hitachi, Runco, Stewart Filmscreen, Focal, SpeakerCraft, Premiere Home Theatre Seating, LiteTouch, Xantech, NuVo, Monster Cable, RBH, Honeywell, OnQ, Universal Remote Control–Visit our showroom(by appt)
Certifications
One or more employees at this company have achieved CEDIA Professional Certification status:- Michael Bruce, CEDIA Certified Professional EST III (Advanced EST), CEDIA Certified Professional EST II

Automotive Sound Engineering
(316) 688-5111
2616 S Oliver St Ste 213
Wichita, KS
 
Sanford A W
(316) 264-1035
2102 E Pawnee St
Wichita, KS
 
Potent Entertainment Dj & Sound Equip.
(316) 253-6905
1301 S Main St
Wichita, KS
 

pass250

POSITIVE FEEDBACK ONLINE - ISSUE 6

pass labs

X250 stereo amplifier

as reviewed by Mark Katz

pass9.jpg (35267 bytes)

Photos taken by Dave Clark in his system

   

The Pass X250 is the 2nd from the bottom of the Pass X series amp line. The smallest is the not so small X150, at 150 watts/channel and at the top are the 1000 watt per monobloc X1000 amps. These amps succeed the excellent Aleph series. The X250 weighs in at 100 pounds, but can be carried by two people with the help of the rear mounted handles. The front has a circular power switch and an attractive blue glowing meter that I believe conveys how much current the amp needs to draw. Wing-like protrusions that can be used as handles surround the meter and the whole amp has a brushed silver look. The back of this rather hefty stereo amp sports both single ended and balanced inputs and clever, large binding posts that are very easy to hand tighten. The binding posts are good for spades, but can’t be used on bananas since there’s nowhere to plug them. Also on the back is the obligatory IEC receptacle for the power cord, and the main power switch. The amp’s operation is intuitive. The manual gives the Nelson Pass design philosophy of low noise, very low distortion, achievable with only 2 stages of amplification and low global feedback using "Supersymmetry" and balanced circuitry. His discussion of distortion minimization makes good reading – in the user’s manual http://www.passlabs.com/pdf/x250man.pdf . Of course, the proof is in the implementation

pass8.jpg (36466 bytes)

I unplugged the Kora Cosmos amps and plugged the Pass X250 directly into a dedicated 20 amp outlet using a fairly hefty Tiff power cord. The rest of the system used included a CEC TL1 transport with Marigo Signature digital interconnect into an Audio Magic modified Kora Hermes 192/24 tubed DAC, Kora Eclipse tubed preamp hooked together with Goertz Triode interconnects. The amp drove the JM Labs Mezzo Utopias, a fairly flat 4 ohm, efficient load through shot-gunned (one run on each terminal) Kimber 8TC. The low powered equipment was plugged into an API Powerwedge 116 II, with the preamp into a non transformer filtered outlet. The amp changed the character of my system. Gone was the seductive sound of the Kora Cosmos, in came POWER. The first thing I noticed was a sense of the music becoming more dynamic. On my speakers, it seemed effortless and amazingly energetic. It sounded as if the dynamics of the performances were brought closer to the original. With the possible exception of very high efficiency horn speakers, dynamics of the music reproduced is markedly diminished compared to the original. Many people deride this type of speakers for poor tonal balance and a honky, "cupped hand" sound and with a few exceptions, they’re right. Despite this they can convey lively dynamics that would otherwise be far more compressed on more "audiophile approved" speakers....

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