Geshelli Labs Z-Blok Mono Amplifier

Geshelli Labs newest product, the Z-Blok mono amplifier

"That initial thought was immediately answered, when I sat to listen to the GESHELLI GIUSEPPE preamp, its Z-BLOCK Monoblocks, and its DAYSEE DAC. I was greeted by a beautifully tactile, rich, transparent flow of music across a deep, and wide soundstage. Together, they provided for a truly immersive listening experience, that brought together a tube-like voice as married to solid state voice and a very good marriage it was." - AudioKey Reviews

About Geshelli Labs

Geshelli Labs are a family owned and operated US company.  As one of the small number of true US audio manufacturing houses, Geshelli has created their niche by being known for doing their gear their way. From design and PCB assembly all the way to woodworking and powder coating, every member of the Geshelli family has a hand in creating Geshelli Labs exciting products.

Z-Blok Amps

The Z-Blok is a fully balanced Monoblock style amplifier that offers low distortion and clean accurate power to enhance your listening experience. Inside the chassis, 40,000uF of total capacitance allows for greater dynamic response for your high load speaker requirements. This Class A/B, solid state, DMOS, push pull design, coupled with the toroidal based power supply, is a combo that offers up to 280 peak watts of output power. A great addition for speakers from open baffle to sealed.

Unique, Beautiful Design

Encasing the well-designed circuitry, you will see and feel the elegant and beautiful handmade wood chassis accented with blind dove tails. With a choice of Walnut or Curly Maple, the Z-Blok is a high quality audio component and a conversation piece. Finishing off the look is high precision laser etched aluminum front and back plates available in silver or black. 

 As with previous Geshelli products, the Z-Blok name follows a trend in all the Geshelli names.  Each product is named after a person who has helped or influenced us in some way.

The Z-Blok is in homage to Geshelli’ s mentor and partner Mike Zaffuto.  Mike is a one of the rare humans that saw something in a guy barely out of his teens and decided to mentor, teach and befriend.  Geno, the designer of Geshelli products, came from the inner city of Pittsburgh. Rough around the edges but with raw talent. Mike a coworker and Professor of Engineering, recognized this and by teaching the old school basics and theory, he was able to turn that raw talent into Electronic Engineering mastery.

Both Geno and Mike loved music.  They dreamt about someday making their own audio gear.  A pipe dream back then, but Geno never forgot about it.  Fast forward through the years and different jobs, Mike and Geno lost touch.  That is, until a few years ago when Geno was telling his wife Sherri about Mike’s influence on him.  At Sherri’s encouragement, Geno found Mike through social media and all it took was one message.  The two reconnected and with greater knowledge and enthusiasm, they started working on combining forces and the result is the Z-Blok.  

Specifications:

Power Class/Output:

• Class A/B (Push Pull)
• 230W @ 8ohms
• 250W @ 4ohms

Power Rail Capacitance

• 40,000uF Total (20,000uF per rail)

Power Input

• 110/120VAC

Frequency Response

• 2-22,000hz Flat @ 1Vrms Input

Signal to Noise Ratio

• -93db @ 1Vrms Input

Total Harmonic Distortion + Noise

• < .01% @ 1Vrms Input

Fuse

• S3A Slow Blow Spring type for high inrush current

Input Impedance

• 22Kohms

Input Sensitivity

• 1Vrms

Dimensions

• Width - 12 5/8”
• Depth - 13” (13” 1/4 with Heatsink Brackets)
• Height - 5 1/2”

Weight

• 17 lbs (7.7 kg)