Soulution 755 Phono Pre

Bränd:
Soulution
Tüüp:
Fono eelvõimendi
Väljundid:
1 × balanced (XLR) 1 × unbalanced (RCA)
Võimendus:
MC: + 78 dB balanced; + 72 dB unbalanced MM: + 66 dB balanced; + 60 dB unbalanced
Sagedusriba:
0 – 1 MHz
Voolutarve:
0.5 W standby 60 W device in operation
Fonosisend:
2 × MC unbalanced (RCA) 1 × MM unbalanced (RCA)
THD + N:
less than 0.002% (20 Hz – 20 kHz)
Signaali-müra suhe:
100 dB
Kanalite eraldusvõime:
60 dB @ 1 kHz
Sisendtakistus:
MC: 10 Ω – 1000 Ω MM: 47 Ω – 47 kΩ and 0 – 750 pF
Väljundtakistus:
2 Ω balanced (XLR) 2 Ω unbalanced (RCA)
Väljundpinge:
16 VRMS balanced (XLR) 8 VRMS unbalanced (RCA)
Mõõdud:
480 × 167 × 450 mm
Kaal:
30kg

42 300,00€

Toote info


The subtle signals of the extremely low output moving coil cartridges pose real challenges to the analogue circuitry in order to achieve low noise, low distortion, high channel separation and maximum linearity while providing more than 80 dB gain – equivalent to raising the signal level by 10,000 – yet must exhibit level and phase accurate behaviour while adhering strictly to RIAA-IEC equalisation standards.

The 755 Phono preamplifier easily complies with this challenging specification: Now analogue records really can sound their best. Their most captivating ever.

Highlights

Layout
Unbalanced circuit design ensures having as few components in the signal path as possible. Dual-mono layout with discrete left and right channels maximise audio purity and virtually eliminates crosstalk. Input selection (including the ground connection) is done by high-grade relay. And input buffering ensures the 755 presents a benign load to the cartridges. For all three inputs (2 × MC, 1 × MM) the gain factor and the terminating impedance are freely selectable. To suppress rumble from warped records there is an IEC subsonic filter (< 20 Hz) which will protect loudspeakers against hazardous cone excursions. Mono operation is selectable as well.

Volume control
The analog, passive volume control uses high-precision, low-noise metal foil resistors, and controls both volume and balance. To block switching peaks during volume changes which may be hazardous to power amplifiers a second volume control with PGA (Programmable Gain Amplifier) is used. Active only when the volume is changed, it is similar to a potentiometer and enables the volume to be adjusted in smooth steps without clicks. As soon as the new desired level has been selected, the unit returns control to the precision resistors.

In case the 755 Phono preamplifier is not connected directly to the power amplifier but to a line preamplifier, the volume control may be switched out of the signal path completely.

Phono module (equaliser)
The challenges to the ideal phono amplifier are immense and represent the «pièce de réstistance» for every designer of high-class audio amplifiers. With a gain of up to 80 dB (which equals an amplification factor of 10,000) the amplifier is expected to show a level and phase true behaviour, i.e. an ultra wideband quality (internal amplifier bandwidth 1  MHz/–  3 dB). At the same time it is to compensate the equalisation curve in accordance with RIAA-IEC standards. This can only be realised by means of a multi-stage amplifier concept using super-grade components.

Output stage
No deletions at the source of the music reproduction are key, therefore a top grade output stage is mandatory. We use the identical circuit as for the 725 preamplifier. The wideband output stage is based on an optimised circuitry with special power transistors which are further linearized by an analogue computing network and has a bandwidth of 40 MHz (– 3 dB). With such speed of response all musical details are reproduced true to life creating a three-dimensional, spatial sound to bring real listening pleasure.

Power supply
Key to any good sounding audio source component is a stable, noise-free power supply – especially for the audio stages. The 755 is equipped with two dedicated power supplies: one for the audio stages and one for the digital circuits. For powering the audio stages an innovative, amplifier-like circuit design is used, providing an extremely stable supply voltage. With more than 500,000 µFarad of storage capacitance it provides almost unlimited impulse current for the analog circuits. Bus bars supply this power throughout the 755 phono preamplifier without any losses. A unique concept in the audio world!

Operation
The 755 phono preamplifier is operated from front-panel buttons and a rotary control. Further functions can be used to optimise and match an entire audio system around different components.

Brändist

Soulution

Soulution kuulub korporatsioonile Spemot, mis asub Šveitsi linnas Dullikenis. Spemot on autotööstuses ja muudes rakendustes kasutatavate elektrooniliste seadmete ja elektrimootorite väljakujunenud disainer ja tootja, sealhulgas professionaalsed toitlustusseadmed. Ettevõttel on suured kogemused innovaatiliste kohandatud lahenduste osas, mis vastavad klientide konkreetsetele vajadustele. 

Esmaklassilist heli taasesitava audiotehnika brändi Soulution lõid Spemoti kaks tegevdirektorit Cyrill Hammer ja Roland Manz, mõlemad kirglikud tipptasemel audioharrastajad. Mõlemad on ajakirja Hi-Fi & Records pikaajalised Šveitsi turustajad. Pärast USA ja Jaapani tootjate toodetud tippvõimendite omamist ja kuulmist otsustasid nad seada endile väljakutse ja luua helitoodete pere, mis seaks uue ja veelgi kõrgema võrdlusaluse. 

Nagu ülemaailmsed audioajakirjade ülevaated Soulution kohta kinnitavad, on Hammer ja Manz oma eesmärgi saavutanud.

 Disain

 Soulution-i silmapaistvaid heliomadusi peaks toetama ka korpuse kujundamine, nii visuaalselt kui ka konstruktsioonilt. Nende suuruse tõttu oli selge, et nad peavad olema optimaalselt integreeritavad kuulamis- / elutuppa, et neid saaks nautida mitte ainult helilise ilu, vaid ka visuaalse välimuse tõttu. Korpuse kujunduse väljatöötamine viidi seetõttu läbi sama ettevaatlikult ja professionaalselt kui elektroonika väljatöötamisel. Esitati mitmeid ettepanekuid, mis vastasid nii stabiilsuse kui ka soojuse hajumise tehnilistele nõuetele, samuti projekteerimisnõuetele.

 Disainiauhinnad

 Pingutus on end ära tasunud. Rahvusvahelised disainižüriid tunnustasid Soulution tooteid ajatu ja elegantse disaini eest mitu korda.

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