Bảo hành: 12 tháng
Tình trạng: Còn hàng
Giá bán: Liên hệ
1. Ưu điểm:
2. Đặc điểm Bộ tiền khuếch đại Preamplifier Manley STEELHEAD® RC Phono stage with remote control:
LINE input comes after RIAA stage, but before the volume control and Variable output white follower buffer. The LINE button on faceplate selects LINE input or the output from the built in RIAA stage.
There are clever anti-RFI grounding options user selectable via dip switches on the back for those in high Radio Frequency Interference zones. If you are picking up a local radio station through your system, try playing with these switches.
All the inputs show up via standard RCA jacks.
There is an additional pair of RCA Outputs for those bi-amping or driving amps and a subwoofer directly from the Variable Outputs. This second set of outputs is wired in parallel to the Variable Outputs. If you need them wired to the Direct Outputs, we can do that too upon request.
The motorized volume control has a smooth action when turned by hand or one can control it via the REMORA REMOTE push buttons.
Badge illumination uses nice looking white LEDs which will never burn out.
Output Muting relays changed to short outputs if power is turned off.
Output Muting relays short out the outputs if power is turned off preventing unwanted bangs or pop noises.
The SLEEP button puts the unit into standby conserving power and tube life.
The audio (audible) circuitry has remained largely unchanged since the first Steelhead shipped in 2001.
It also has an input that functions with the resistive input loading values of: 100, 470, 800, 1000 and 47000 Ohms. Very nifty is the selectable-dial-able-in-able-from-the-faceplate-able capacitive loading for all three of the phono inputs 0 to 1100 picofarads in 10 picofarad steps. Very cool! Equalize baby! TEN picoFarad steps! Wow! Now you can really dial this in for perfect cartridge matching with ZERO penalty. None of this switching detracts from the sound quality or adds any extra anything to the signal path. Rest assured.
It can drive an amplifier directly if you want, if you don't "do" digital. Hey and if you happen to have three turntables set up, we give you 2 x Impedance loading inputs and 1 x Resistively loaded selectable inputs! It's got variable and fixed volume outputs. And All-tube really low Z tube buffered outputs. Like inherently 20 Ohms plus the little 47 Ohm "OK drive those high capacitance audiophile cables why doncha" resistor, so it's real output impedance is only 67 Ohms. No wanky cathode follower (oh bor-ing) output here like the other guys. We got your real low impedance all-tube outputs right here! It will drive anything and everything. Long cables, no problem.
Gain switch markings are referred to from the input of the 1st active electronics at 1 kHz to the fixed output @ 10k load, regardless of whether source is the first resistively loaded input or the two XFMR stepped-up Impedance loading inputs. It is not really practical to include the step-up gain on the front panel markings due to the variable SOURCE impedances of the cartridges and the variable LOADING that the input XFMR will have on any given cartridge. All of this total gain variability should be confined to about 3 to 12 dB of range though. XFMR step-up gain plateaus as the load Z on a given cartridge is optimized...producing no VOLTAGE gain but in fact a bit more POWER gain... All this means you should set a load Z which sounds best with your particular cartridge and adjust gain to suit your system's operating level. Whatever you like. You will not blow anything up. (Bottom line: there is plenty of gain... enough to do justice to your fave lo-output MC cartridges).
And what goes with DIM better than SUM which would be the MONO button... It has a killer hyper-regulated outboard power supply that plugs in on the huge-est connector you ever saw. And you can just hit the "standby" button to keep everybody off while you take a small holiday to Tahiti. A backlit "MANLEY STEELHEAD" illuminated badge reflects back to vinyl-days-of-yore while the millions of BLUE LEDs remind you that this is modern tube engineering design, baby! The VARIABLE Outputs are controlled by the precision film dual NOBLE® volume control. They are SMOOTH action these days as the fashion went against the detented ones. This is a tweak-o-holic tube-lover's dream....
There is a stereo LINE input included as standard. This means you can drive your amplifiers directly from the Steelhead's Variable Outputs and select whether you are listening to the Steelhead phono stage or any analog LINE-level source (the analog outputs from your CD player, DAC (Digital to Analog Converter), Tape, Tuner, Television, a whole 'nuther preamplifier's main line output, or better yet, use a Manley SKIPJACK to add up to 4 more LINE inputs into your Steelhead!) This feature turns the hifi world upside down. It is novel.
- Chúng tôi luôn hướng đến sự hài lòng của khách hàng một cách tốt nhất.
- Giao hàng và bảo hành nhanh chóng trong vòng 24h.
- Dịch vụ hậu mãi, nhân viên chu đáo.
- Linh kiện, phụ kiện thay thế cam kết chính hãng, lắp đặt đúng quy trình của nhà sản xuất.
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
Resistively Loaded selections: 5-step user adjustable via fixed low-noise resistors. 100, 470, 800, 1000 and 47000 Ohms. (after mid-2020)
Impedance Loaded input selections: 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 two autoformer inputs’ 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
DIM function level reduction: 24dB with volume at MAX CW, 20dB with volume at 50% rotation.
REMORA RF REMOTE: controls motorised volume control up/down functions; uses 9v battery
Maximum MM input level: 50 mVrms @ 1KHz for an output of 17 Vrms or -23.8 dBu @ 1KHz for an output of +27 dBu @ 1.5% THD
Maximum MM input level: 93 mVrms @ 1KHz for an output of 29 Vrms or -18.4 dBu @ 1KHz for an output of +32.3 dBu @ 10% THD
Maximum MC input level: 39 mVrms @ 1KHz for an output of 17 Vrms or -26 dBu @ 1KHz for an output of +27 dBu @ 1.5% THD
Maximum MC input level: 72 mVrms @ 1KHz for an output of 29 Vrms or -20.6 dBu @ 1KHz for an output of +32.3 dBu @ 10% THD
Maximum LINE input level: 26.5Vrms @ 1KHz for an output of 22.8Vrms or +30.6dBu @ 1KHz for an output of +29.3dBu @ 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.