KRELL KSP-7B
¥ 500,000 (released in 1992)
Commentary
This is a stereo preamplifier that inherits the contents of the Reference Series while reducing the cost and converting it into a stereo type.
The flat amplifier section is equipped with two amplifiers, one for the positive side and the other for the negative side, and uses a fully balanced transmission.
As a result, the distortion reduction capability is higher than that of an amplifier that balances only the transmission system, and further improvement in sound quality is realized.
The flat amplifier can be switched between two levels of gain.
The equalizer amplifier is compatible with both MM and MC by switching the switch on the board. For MC type, it is possible to switch impedance in 10 stages.
The equalizer circuit is composed of highly selected high-precision elements.
The absolute phase can be switched between 0 and 180 degrees using the switch.
The output terminals are equipped with balanced outputs using the Canon terminal and unbalanced outputs using the pin terminal.
The power supply has a separate housing design to eliminate adverse effects from the power supply circuit.
The power supply has a monaural design in which L and R are completely independent.
Model Rating
| Type | Control amplifier |
| Input Terminal / Impedance | Phono : 5 Ω, 10 Ω, 25 Ω, 47 Ω, 100 Ω, 247 Ω, 470 Ω, 810 Ω, 1k Ω, 47k Ω CD, Tuner, Aux, Tape : 10k Ω |
| Output Terminal / Impedance | Pre out : 10 Ω Tape out : 10 Ω |
| Total harmonic distortion factor | Phono : 0.05% or less Line : ≤ 0.005% |
| Frequency characteristic | 5 Hz to 100 kHz ± 1 dB or less |
| Signal-to-noise ratio | Phono MM:78dB Aux:100dB |
| Gain | Phono MC:60dB Phono MM:40dB Line : 6.8dB/12.8 db Switching Type |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | 50W |
| External dimensions | Body : Width 467x Height 52x Depth 335 mm Power Supply : W 190x H 58x D 200 mm |
| Weight | Body : Approx. 7.8 kg Power Supply Part : Approx. 3.5 kg |