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Manley – Steelhead Rc – Pre Phono
Per ascolti e infoemail: sophoshiend@gmail.comBruno Fazzini – tel. + 39 347 1402138 |
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Google translator is available
By Bruno Fazzini
Graphic Massimo Piantini
Prestigioso (e costoso) pre phono valvolare del rinomato marchio americano. E’ famoso per le sue innumerevoli regolazioni e per il suo elevato livello di musicalità, secondo alcuni inarrivabile da altri phono anche di pari categoria economica e con la stessa tipologia di trattamento del segnale.
Ecco cosa dicono dello Steelhead alcuni dei più prestigiosi recensori hi-fi sulla loro esperienza con questa elettronica.
Michael Fremer raves in his 2001 Stereophile review that “The Steelhead delivered the best vinyl playback I’ve heard from my system . . . it combined speed, frequency extension, resolution, harmonic structure, focus, air, stage depth, image specificity, and, most important, overall musical coherence in a way that made the music seem to fly from the speakers unrestrained by mechanical or electrical bounds.”
Wayne Garcia of The Absolute Sound writes, “[The] Steelhead is one of the quietest, most detailed, and highly musical preamps out there. The Steelhead has a stunningly crafted RIAA stage, accepts three phono cartridges, and gives you so much control that you can fine-tune it to get the best out of any cartridge.”
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Ken Kessler: “I’m prepared to say that the Steelhead is the best-sounding phono stage I’ve ever experienced,” Hi-fi News in England.
Manley – Steelhead Rc – Pre Phono
SPECIFICATIONS
Vacuum tube complement: 6922 SOVTEK Russian x 2 (gain) plus JAN NOS GE 7044 or 5687 x 4 (output buffers)
Fuse type and ratings
117 VAC operation: 1.5 Amp 3AG slow-blow mains fuse 0.5 Amp 3AG slow-blow logic fuse
Fuse type and ratings @ 230 VAC operation: 0.75 Amp 3AG slow-blow mains fuse 0.25 Amp 3AG slow-blow logic fuse
Moving Magnet input impedance: 5-step user adjustable via fixed low-noise resistors. 25, 50, 100, 200 and 47000 Ohms.
Moving Coil input impedance: 5-step user adjustable via multi-tap autoformer: 25, 50, 100, 200 and 400 Ohms.
Input Termination Capacitance: Front Panel Selectable in 10 picofarad steps from 10 to 1100 pF (1.1nF) Residual input capacitance less than 40 pF.
Gain: 4-step user adjustable, 50, 55, 60 and 65 dB active gain at 1 kHz referred to the FIXED output jack into a 10 kOhm load. Additional gain available via the MC input’s step-up autoformer. See Owner’s Manual for discussion.
Deviation from RIAA curve: Less than +0.5 / -0.3 dB from 20 Hz to 20 kHz at any gain setting. Typically less than ±1 dB from 10 Hz to 100 kHz
Inter-channel differential phase: Less than 4 degrees from 20 Hz to 20 kHz at any gain setting. Typically less than 2 degrees.
Inter-channel differential gain: Less than ±0.5 dB from 20 Hz to 20 kHz at any gain setting.
Dynamic Range: 101 dB @ 1 kHz, 1% THD measured with 200 Ohm source, 47 kOhm input, @ 55dB Gain 97 dB @ 1 kHz, 0.1% THD
THD: 0.0042% at 1V output @1kHz
Maximum LINE input level: +30.6dBu @ 1KHz for an output of +29.3dBu @ 0.07% THD 26.5Vrms @ 1KHz for an output of 22.8Vrms @ 0.07% THD
Maximum Output: +27dBm @ 1KHz with 3% THD into 100 kOhm load
FIXed Output impedance: 150 Ohms. Minimum suggested load greater than 1500 Ohms.
VARIable Output impedance: 75 Ohms. Minimum suggested load greater than 600 Ohms.
MM Noise (S+N+D) / (N+D)
200 Ohm source, 47 kOhm input,
A-weighted Referred to 2.54 mV, rms @ 1 kHz
Gain Setting:
50dB = Fixed Output 86dB = Variable Output 108dB, 99dB, 86dB (9:00, 12:00, VC FULL)
55dB = Fixed Output 84dB = Variable Output 108dB, 99dB, 85dB (9:00, 12:00, VC FULL)
60dB = Fixed Output 80dB = Variable Output 108dB, 94dB, 80dB (9:00, 12:00, VC FULL)
65dB = Fixed Output 75dB = Variable Output 108dB, 89dB, 75dB (9:00, 12:00, VC FULL)
MC Noise (S+N+D) / (N+D)
100 Ohm source, 100 Ohm input,
A-weighted Referred to 0.5 mV, rms @ 1 kHz and rated Input Z
Gain Setting
50dB = Fixed Output 84dB = Variable Output 108dB, 98dB, 85dB (9:00, 12:00, VC FULL)
55dB = Fixed Output 80dB = Variable Output 108dB, 95dB, 81dB (9:00, 12:00, VC FULL)
60dB = Fixed Output 75dB = Variable Output 108dB, 90dB, 76dB (9:00, 12:00, VC FULL)
65dB = Fixed Output 70dB = Variable Output 108dB, 85dB, 71dB (9:00, 12:00, VC FULL)
Prezzo di Listino Euro 14.700
Per ascolti e infoemail: sophoshiend@gmail.comBruno Fazzini – tel. + 39 347 1402138 |
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Manley – Steelhead Rc – Phono
