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Threshold 400A Solid State Class A amp. Xiang Pheng Preamp. Rotel HDCD - $1,700 (san leandro)
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All 3 items are perfectly functional and in mint condition.
Threshold 400a Class A amplifier
XIANG PHENG 728A TUBE preamplifier
Rotel RCD 1072 HDCD player / with remote
THRESHOLD 400A SOLID STATE CLASS A AMPLIFIER. MINT CONDITION FULLY FUNCTIONAL
100 Watts class A power
Nelson Pass founder/engineer well known to the audio enthusiasts especially for his solid class A amplifiers.
This amplifier can push almost any speaker without problem.
Sound is tube like sweet sound but with a huge bottom end punch.
Excellent working condition, fully functional without any problems. Full service work internally was done about 5 years ago professionally.
Cardis speaker connectors installed
All soldering re-done
All necessary electrical parts replaced as required.
Cosmetically, this amp is EXCELLENT
No letter fading
No dings or crack on FACEPLATE LED DISPLAY.
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ROTEL Compact Disc Player RCD-1072
MSRP $699
Excellent condition and fully functional with factory remote…hi-end audiophile
Specifications
Total Harmonic Distortion
0.0045% @ 1kHz
+ Noise
Intermodulation Distortion 0.0045% @ 1kHz
Frequency Response
(± 0.5 dB)
20-20kHz
Channel Balance ± 0.5 dB
Phase Linearity ± 0.5 degree
Channel Separation > 98 dB @ 1kHz
Signal to Noise Ratio > 100dB
Dynamic Range > 96 dB
Digital to Analog 18 bit equivalent,
Converters multi-level Delta-Sigma
DAC with 8x oversampling
digital filter and HDCD
Speed Accuracy,
Wow & Flutter
Quartz Crystal Precision
Output Impedance 100 Ohms
Digital Output 0.5 Volt, Peak to Peak
Load Impedance 75 Ohms
Power Requirements
USA Version
European Version
AC 115V, 60 Hz
AC 230V, 50 Hz
Power Consumption 20 Watts
Dimensions (W, H, D) 433 x 92 x 337mm
17 1/8 x 3 11/16 x 13 1/4 in
Front Panel Height
(for rack mount)
3 1/8”, 80 mm
Weight (net) 5.8 kg, 12.8 lbs.
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XIANG PHENG 728A tube preamplifier.
Technical Parameter
Input impedance:100 Kohm
Output impedance:600 ohm
Total Hamonic Distortion:less than 0.01%
Frequency Responses:20Hz-30KHz+-1dB
Signal to Noise Ratio :90dB
Input Jack:4 groups
Output Jack:2 groups
Supply Votage:AC110/220V 60Hz/50Hz.
Size:435mm(width)*90mm(height)*290mm(Depth)
Used tubes :12AT7*2PCS,12AU7*2PCS,6Z4*2PCS
Net weight:about 5.6kg
The function and appearance of this unit now are perfect after going through improvements for several times.
The pre-amplifier improved based on famous Wada ,Shigeho's Style Electric ,which was introduced by Wada Shigeho in the early 1960s and gave an excellent performance.
Using the entire circuit board design,internal layout is more rational and refined.
Brushed aluminum(8mm thickness)siliver faceplate,with all metal buttons and knobs,plus blue LED indicator light and unique tubes display window.
(2)groups of RCA outputs:one with low impendance output and one with high impedance out put.The unit not only can be connected to power as a preamplifier ,but aslo can be connected to integrated amplifier as a timbre regulator and improve the sound quality of whole system.
R-shape high efficiency transformer and gold coated RCA connectors plus outputs terminals.
Adopts 4pcs of paper in oil capacitors and German WIMA capacitors for coupling effect,make the sound warm and more details.
All resistors and capacitorsare audiophile grade to ensure sound quality.
The unit have Bass and Treble Controls and volume,balance adjustment on it plus tone bypass function,it bypasses the treble and bass controls ,so you get a more "neutral"and original sound.