Aprilsound Online Catalog
Custom Built Electronics
Custom-made, high current, pure Class A, zero negative feedback amplifiers and preamplifiers built to order
Phono Supplies
Berger–Morrison phono preamp
Denon DL-103 moving coil
phono cartridge
The most popular MC cartridge in Japan, the Denon DL-103 is one
of the great bargains in hi-fi! Super-smooth and extremely
detailed with excellent tracking. You'll hear top-notch
reproduction of your LPs - especially when coupled with one of
our high performance phono preamps like the Berger-Morrison
preamp described above. Or choose the classic Loesch preamp, or a
completely custom design using the new Russian "super tubes"
like the 6C45-Pi or 6N30-Pi...
The Nature Sound line of audio transformers from Japan
Nature Sound transformers are made with Permalloy cores, described here in the words of Herbert Reichert:
| "Permalloy is an alloy of nickel (40% to 80%) and iron that has an exceptionally high magnetic permeability (B/H). High permeability transformer cores are more sensitive and responsive to low-level audio signals. Permalloy is more expensive than more commonly used materials, but must be used if the highest quality output transformer is required. Permalloy output transformers typically have better transient response, greater information retrieval and are generally more vivid in their presentation of music." |
| PERMALLOY CORE SINGLE-ENDED | ||||||
| Model | Watts | Pri. Imp. (Ohms) | Sec. Imp. (Ohms) | Freq Response | Applications | Price/Each |
| NS-30SE (47% Permalloy) |
8 | 3k | 4, 6, 8, 16 | 20Hz - 70kHz | 300B, 2A3 | $430.00 |
| NS-70SE (47% Permalloy) |
8 | 2.5k, 3.5k, 5k, 7k | 4, 8, 16 | 20Hz - 50kHz | 300B, 50, 45, 2A3, PX-4, PX-25, etc. | $430.00 |
| PERMALLOY CORE CHOKE COIL | |||||
| Model | Inductance | Current Rating | DC Resistance | Insulation | Price/Each |
| CH – 1020 | 10 Henries | 200mA | 135W | DC 1KV | $240.00 |
| CH – 1515 | 15 Henries | 150mA | 170W | DC 1KV | $230.00 |
| UNIVERSAL OPTs | |||
| Model | Watts | Pri. Imp. (Ohms) | Price |
| Nature Sound NS-70SE | 8 | 2.5k, 3.5k, 5k, 7k | $430.00 |
Tango audio transformers from Japan
We regret that Tango went out of business in August of 2000. Aprilsound has a very few Tango items remaining in stock, but the complete line is no longer available. Please email or call for availability and pricing.