Zesto Audio Andros Tessera
Spécifications résumées:
- Two completely independent dual mono channels, with LED indicators for A and B
- Accommodates 4 tonearms, 1 MM and 1 MC per channel
- All settings are saved when you switch between channels
- Dual chassis with external power supply
- 3 meter umbilical cable incorporating special RFI suppression to provide lower black levels
- Dedicated high quality output transformers drivin by output tubes
- True floating ground, transformer balanced XLR inputs and outputs
- 12 position MC load per channel with more finessed adjustable options like 1000, 800, 700, 500, 400, 350, 300, 250, 200, 150, 100, 50 Ohms
- Easily adjustable MC “Load on the fly” without klicks or pops so you can hear the change
- 100% tube circuitry in the signal path without any solid state devices
- All switching is done with relays
- Ground lift switches are on each channel to prevent noisy ground loops
- All the RCA and XLR connectors are Gold plated for better conductance and lower corrosion
- All switches and knobs are easily accessible, nothing hidden inside to adjust
- Recessed RCA connectors are durable and will hold up to the typical Audiophile who loves to change their configuration
- Elegantly designed 16 gauge steel enclosure to help isolate the electronic “chatter” from nearby equipment
- Each unit is hand built “Made in the USA”
- 50 hour factory burn in on all circuits and vacuum tubes
Specifications:
Inputs per Channel
- Two completely independent dual mono channels, A and B with LED indicator
- Accommodates 4 tonearms, 2 per channel
- Separate MM and MC inputs per channel
- Each channel has independent controls and all selections are saved when you switch between channels
- Selection switch for MC and 2 position MM 47K and MM 68K
- MM impedance switch 47K or 68K Ohms
- MM capacitance 220pf
- MC transformer Balanced gold plated XLR input
- MM and MC Single Ended RCA input, gold plated with isolated ground
- 4 MC ground on/off switch
- 12 position MC load impedance:1000, 800, 700, 500, 400, 350, 300, 250, 200, 150, 100, 50 Ohms
- 4 Superior quality MC Internal step up transformers
- 3 position MC gain switch for High, Medium & Low output cartridges
- Two ground binding posts
Outputs per channel
- High quality output transformers driven by dedicated 12AU7/ECC82 output tubes
- True floating ground, transformer Balanced XLR gold plated outputs
- Single Ended gold plated RCA output, with isolated ground
- Impedance 150 Ohms
- +8V max output level
Active Components
- Four (4) Gold pin JJ ECC83S/12AX7 vacuum tubes with high quality gold pin ceramic sockets
- Two (2) Gold pin JJ ECC82/12AU7 vacuum tubes with high quality gold pin ceramic sockets
Power
- Dual chassis
- Power supply with 3 meter DC umbilical cable incorporating special RFI suppression
- Locking bayonet connector rated for higher voltage and higher current
- 3 internal linear regulated power supplies, 1 high voltage 250V and 2 low voltage 12V
- Power supply dual color LED, yellow for standby and red for ON
- Main unit push ON/OFF front power switch illuminates a red LED on Channel A or B
- Power supply standby switch on the front
- Power supply standby power rating 7 Watts
- Power consumption 52 Watts
- Standard 3 pin 15A IEC power connector on power supply
- Voltage 110/120V AC 60Hz
- Optional factory installed 220V or 230/240V AC 50/60Hz
Detailed Specifications
- 3 position Gain switch
- MC input 60dB, 65dB and 70dB or MM input 40dB, 45dB and 50dB
- Noise – 90 dBu below max output level
- Frequency response complies with the original RIAA curve within +or- 0.5 dB
- RIAA curve is achieved using a passive filter
- 1% metal film resisters throughout
- Polypropylene capacitors throughout the audio path
- All analog tube circuitry with no solid state devices in the signal path
Other Features
- Controls on the front
- “Made in the USA” using US and imported parts
- Each unit is built by hand
- 50 hour factory burn in on all circuits and vacuum tubes
- Dimensions main chassis 17″ W X 15″ D X 5.5″ H, Power Supply 17”W x 8”D x 5”H
- Weight: Main unit 25 lbs (11.34 Kg), Power supply 17 lbs (7.7 Kg)
- Shipping weight 53 lbs (24 Kg), box 20″ X 20″ X 20″
- 16 gauge zinc plated steel enclosure
- Two year limited warranty
- Six months warranty on Vacuum Tubes
Lors de sa première présentation officielle au RMAF 2016, le Andros Tessera remporte de nombreux prix:
Jim Hannon’s « Best of Show »
« Best Sound » (for the money)
« It put many more expensive systems to shame. »
Jim Hannon – The Absolute Sound, RMAF Show Report – October 2016
« Most Coveted Product » and « Auspicious Debuts: Analog »
Jim Hannon – The Absolute Sound – RMAF 2016 Show Report
« Zesto Audio’s new Téssera Phonostage made me think I was listening to master-tapes.
One of the best sounds of the show! »
Notons aussi l’excellent résumé du magazine Stereophile:
« This was one of those happy, expectation-fulfilling rooms where recordings actually sounded like music. »
Jason Victor Serinus – Stereophile – October 2016
Lien sur l’article Hifi Link
Le Tessera obtient aussi le Award positive feedback lors du salon Axpona 2017:
Le préampli Andros Tessera fait la une de Stereophile en Juin 2017:
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