Elekit TU-8550 Stereo Tube Preamplifier Kit
The TU-8550 is Elekit’s newest tube preamp kit with a built-in phono equalizer, configured with tubes, 12AU7 and 12AX7, for all signal stages. JJ 12AX7 x 4 and JJ 12AU7 x 2 included.
- A CR type RIAA equalizer circuit for straight-forward and smooth sound quality.
- Quadral volume for the flat amp diminishes residual noise at low volume.
- Thorough elimination of hum noise - In the power sections, for rectification, first-recovery diodes are adopted for B-power, and a slow-start by MOSFET is adopted for stabilized power supply. In addition, for A-power (heater power), all tubes are DC-powered by a LDO regulator to eliminate hum noise thoroughly.
REC-OUT built-in. Signals selected by the selector are output from REC-OUT which users may use when
connecting TU-8550 to a recording device or using the signals output from the equalizer
amp of TU-8550 in other amplifier device.- 2 lines of PRE-OUT. You can connect up to 2 power amps to TU-8550.
- Ample space for a larger coupling capacitor exchange. Maximum size of a capacitor : 20mm(diameter) x 57mm(length)
- This product has no reviews.
SPECIFICATIONS
[Circuit configurations, stock tubes]
Flat amp (line amp) : 2x 12AX7, 1x 12AU7, SE input/output
Phono equalizer amp : 2x 12AX7, 1x 12AU7, CR type, RIAA equalizer amp
A-power : DC-power (all tubes)
B-power : MOSFET, slow start, constant voltage power
Line AMP
Unbalanced output, continuously variable gain
[Max. output voltage] (1kHz)
Over 30V rms (Volume at the max.)
[Max. gain] (Volume at the max.)
Approx. 17dB (approx. 7 times)
[Frequency response] (-3dB, 47kΩ load) 5Hz to 200kHz
[Residual noise] (IHF-A)
15μV (Volume at the max.)
6.5μV (Volume at the middle)
4.3μV (Volume at the min.)
[SN ratio (IHF-A)]
130dB (Volume at the middle)
126dB (Volume at the max.)
Equalizer amp
[Max. output voltage] (1kHz) 20V rms (1kHz)
[Gain (1kHz)] 29dB
[SN ratio(IHF-A)] 112dB
[RIAA equalization] Within ±0.5dB (20Hz to 20kHz)
[Input resistance] 47kΩ
General
[Input/output terminal / Input and output impedance]
PHONO IN：RCA jack, for MM cartridge, 47kΩ
LINE IN： 4 lines
LINE 1, 2, 3 : RCA jack, over 50kΩ)
LINE 4 : 3.5mm stereo phone jack (front), approx.12kΩ)
PRE OUT：RCA jack, 2 lines (parallel output), approx.1.1kΩ
REC OUT：RCA jack, 1 line, approx.2.4kΩ for PHONO
Output impedance of the sound source + 1kΩfor LINE IN
[Power voltage] AC 100V 50/60Hz
(For overseas, 115V(110 –120V) or 230V(220 –240V), 50/60Hz)
IEC standard, 3P inlet type
[Rated power consumption] 23W
[Dimensions] W352 x H66 x D298 mm (including projections)
[Weight] Approx.4.0kg (Assembled, excluding AC cord)