Little Dot LD I+ 6JI Dual Tube Transistor Hybrid Headphone Amplifier

The Hybrid Structure of "front tube and back stone

LD1+ adopts the so-called "front and back stone" hybrid structure in the circuit design: the front tube uses 6J1 dual vacuum tubes (WE408A/EF92 available too) and the back stone uses a buffer amplifier circuit composed of op amp + discrete components mainly composed of transistors. The sweetness of the machine also has the speed of the stone machine.

High-Value Aluminum Alloy Chassis Structure

Little Dot LD1+ uses an aluminum alloy chassis structure with fine craftsmanship: the chassis adopts a secondary oxidation process with good smoothness and feel, and the electron tube is equipped with an aluminum alloy decorative ring.

More Pre-tube Options

The feature of this machine is that there are 4 tube switches inside, which are used to select different pre-tubes: WE408A/WE403A, B/EF91, 92/CV131, 138/5654/EF95/6J1 and other tubes can be used directly through the switch, bringing more fun in changing tubes.

Tips For More Info

This machine has different versions according to different front tube configurations: Basic type: 6J1 (Beijing Electronic Tube Factory), Enhanced Type: EF92 or 6CQ6 (British Regal), Luxury Type: NE408A (Canada Nortel)

Spec:

Input terminal:RCA x2

Output terminal:6.35 Headphone socket

THD+N:0.2%: 1Vrms @ 1000Hz

             0.6%: 3Vrms @ 1000Hz

             1.0%: 5Vrms @ 1000Hz

Signal-to-Noise:92dB

Suitable Headphone Impedance:8 - 600 ohms

Input Impedance:50K ohms

Output Power:150mW @ 300 ohms

                       300mW @ 120 ohms

800mW @ 32 ohms

Variable gain settings:6.5x or 3.25x

Power Consumption:15VA

Product Dimension:180mm (L) *97mm (W) *100mm (H) (7.08*3.81*3.93in)

Product Weight:1.5 kg(3.3 lbs)