Tube Amplifier Output Transformers
|
Type
|
Impedance Ratio
|
| LL1620 |
3.3k, 6.0k or 11.5k primary impedance. 4, 8, or 16 ohms secondary impedance |
| LL1623 |
1.6k, 3.0k or 5.6k primary impedance. 4, 8, or 16 ohms secondary impedance |
| LL1627 |
650 ohms, 1.2k or 2.3k primary impedance. 4, 8, or 16 ohms secondary impedance |
| LL1663 |
5k primary. UL tap. 8 ohm secondary impedance |
| LL1664 |
3k primary. UL tap. 8 ohm secondary impedance |
| LL1679 |
2.6k, 4.5k, 9.7k primary impedance. UL tap. 4, 8, or 16 ohms secondary impedance |
| LL1682 |
5.5k primary. 33% UL tap. 5 ohm secondary impedance |
| LL1688 |
5.5k, 9.2k, 20.5k primary. 33% UL tap. 4, 8, or 16 ohms secondary impedance |
| LL1691 |
9k primary. 8 ohms secondary impedance |
| LL1691B |
18k primary. 8 ohms secondary impedance |
| LL1693 |
600 ohm, 1k, 2.3k primary impedance. 4, 8, or 16 ohms secondary impedance |
| LL2735 |
16k primary. 8 ohm secondary |
| LL9202 |
6.5k, 11k, or 23k primary impedance. 4, 8, or 16 ohms secondary impedance |
|
Tube Amplifier Interstage Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1635 |
1+1 : 1+1 |
SE : SE or P-P : P-P |
| LL1660 |
1+1+1+1 : 2.25+2.25 |
Numerous connection alternatives |
| LL1660S |
1+1+1+1 : 2.25+2.25 |
Numerous connection alternatives; Faraday shields |
| LL1671 |
1+1+1+1 : 2+2 |
High current version of LL 1660 |
| LL1677 |
1+1+1+1 : 4+4 |
High current interstage transformer; for 300B driving tube |
| LL1692A |
1+1+1+1 : 1.75+1.75 |
Numerous connection alternatives; parameters between LL1660 and LL1671 |
| LL2745 |
1+1+1+1 : 2.6 + 2.6 |
Numerous connection alternatives, SE or PP |
|
Tube Amplifier Input Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1544A |
1+1+1+1 : 2+2 |
Line input. Amorphous core |
| LL1545A |
1+1+1+1 : 2+2 |
Line input. Mu metal core |
| LL1674 |
1+1 : 4+4 |
High level input. Amorphous core |
| LL1676 |
1+1 : 2+2 |
High level input. Amorphous core |
| LL1690 |
1+1 : 1+1 |
High level input. Amorphous core |
| LL1948 |
1+1 : 1+1 |
High level input. Amorphous core with Cardas high purity copper wire coils. |
| LL1948Ag |
1+1 : 1+1 |
High level input. Amorphous core with high purity silver wire coils. |
| LL7901 |
1+1+1+1 : 1+1+1+1 |
Very high level line input |
| LL7902 |
1+1+1+1 : 1+1+1+1 |
High level line input |
|
Preamplifier Output Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1630 |
7.2+7.2 : 1+1 |
High ratio output, SE or PP |
| LL1660 |
1+1+1+1 : 2.25+2.25 |
Numerous connection alternatives, SE or PP |
| LL1674 |
4+4 : 1+1 |
Parallel feed output. Amorphous core. |
| LL1676 |
2+2 : 1+1 |
Parallel feed output. Amorphous core. |
| LL1680 |
9+9 : 1+1+1+1 |
Replacement for UTC LS-27 transformer |
| LL1689 |
9+9 : 1+1+1+1 |
Numerous connection alternatives, SE or PP |
| LL1692A |
1+1+1+1 : 1.75+1.75 |
Numerous connection alternatives; SE or PP |
| LL1930 |
5.6+5.6 : 1+1 |
Parallel feed output, unshielded |
| LL2745 |
2.6 + 2.6 : 1+1+1+1 |
Numerous connection alternatives, SE or PP |
|
Line Level Input Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1531 |
1+1:2 |
Mu metal core. Small size |
| LL1540 |
1+1 : 1+1 |
High impedance line input |
| LL1544A |
1+1+1+1 : 2+2 |
Line input. Amorphous core |
| LL1545A |
1+1+1+1 : 2+2 |
Line input. Mu metal core |
| LL1592 |
1+1: 1+1 |
Improved, larger version of LL1540 |
| LL1674 |
1+1 : 4+4 |
High level input. Amorphous core |
| LL1676 |
1+1 : 2+2 |
High level input. Amorphous core |
| LL1690 |
1+1 : 1+1 |
High level input. Amorphous core |
| LL1948 |
1+1 : 1+1 |
High level input. Amorphous core with Cardas high purity copper wire coils. |
| LL1948Ag |
1+1 : 1+1 |
High level input. Amorphous core with high purity silver wire coils. |
| LL7901 |
1+1+1+1 : 1+1+1+1 |
Very high level line input |
| LL7902 |
1+1+1+1 : 1+1+1+1 |
High level line input |
|
Line Level Output Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1517 |
1+1 : 1+1 |
Low impedance balanced or unbalanced drive solid state drive |
| LL1524 |
1+1 : 1+1 |
Low impedance balanced or unbalanced drive solid state drive |
| LL1539 |
2: 1+1 |
Low impedance balanced or unbalanced drive solid state drive |
| LL1585 |
1+1 : 1+1 |
High level, low impedance balanced or unbalanced drive solid state drive |
| LL1588 |
1+1 : 1+1 |
Low impedance unbalanced solid state drive. |
| LL2811 |
1+1 : 1+1 |
Low impedance balanced or unbalanced drive solid state drive, Euroboard size |
| LL1684 |
1+1 : 1+1 |
Amorphous core, low impedance unbalanced solid state drive. |
| LL5402 |
2 : 1+1 |
Low impedance unbalanced solid state drive. |
| LL2734 |
1:1.4 |
Single-ended BJT drive |
| LL2793NC |
4+4:1+1+1+1 |
Nanocrystalline C-core line output transformer available with different core air gap for PP or SE drives |
|
MC Phono Input Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1678 |
1+1+1+1 : 16+16 |
Moving coil input. Amorphous core |
| LL1681 |
1+1 : 13+13 |
Moving coil input. Mu metal core |
| LL1931 |
1+1 : 8+8 |
Moving coil input. Amorphous core with Cardas high purity copper wire coils. |
| LL1931Ag |
1+1 : 8+8 |
Moving coil input. Amorphous core with high purity silver wire coils. |
| LL1933 |
1+1 : 8+8 |
Moving coil input. Mu-metal core with Cardas high purity copper wire coils. |
| LL1933Ag |
1+1 : 8+8 |
Moving coil input. Mu-metal core with high purity silver wire coils. |
| LL1941 |
1+1 : 16+16 |
Moving coil input. Amorphous core with Cardas high purity copper wire coils. |
| LL1941Ag |
1+1 : 16+16 |
Moving coil input. Amorphous core with high purity silver wire coils. |
| LL1943 |
1+1 : 16+16 |
Moving coil input. Mu-metal core with Cardas high purity copper wire coils. |
| LL1943Ag |
1+1 : 16+16 |
Moving coil input. Mu-metal core with high purity silver wire coils. |
| LL9206 |
1+1+1+1 : 10+10 |
Moving coil input. Amorphous core |
| LL9226 |
1+1+1+1 : 10+10 |
Moving coil input. Amorphous core. Lower impedance than LL9206. |
|
Audio Chokes
|
Type
|
Inductance
|
Usage/Comment
|
| LL1667 |
Various, 270H+ |
Tube anode choke. Various DC currents |
| LL1668 |
Various, 40H+ |
Tube anode choke. Various DC currents |
| LL1670 |
540 H |
Grid choke. 0.8mA |
| LL2743 |
Various, 40H+ |
Tube anode choke for higher current |
|
Power Transformers
|
Type
|
Secondary Voltages
|
Usage/Comment
|
| LL1648 |
350 V, 2×5.9 V, 2×6.6 V |
Mains transformer |
| LL1649 |
230 V, 4×6.6 V |
Mains transformer |
| LL1650 |
350 V, 4×6.6 V |
Mains transformer |
| LL1651 |
500 V, 4×6.6 V |
Mains transformer |
| LL1669A |
340 V, 4×6.6 V, 1×110 V |
Mains transformer |
| LL1683 |
2x250V, 2×6.6V, 2×5.2V, 1x48V |
Mains transformer |
| LL2738 |
8×6.6V, 1x110V |
Mains transformer |
|
Power Supply Chokes
|
Type
|
Inductance
|
Usage/Comment
|
| LL1638 |
1 – 8 H |
Mains choke |
| LL1673 |
2.5 – 20 H |
Mains choke |
| LL1685 |
2.5 – 17H |
Mains choke |
| LL1694/1.5 |
40 – 160mH |
Filament choke designed for DC supply directly heated tube filament. |
| LL2733/1.7A |
0.1 – 0.4H |
Filament choke designed for DC supply directly heated tube filament. |
|
Digital Audio Transformers
|
Type
|
Impedance Ratio
|
Usage/Comment
|
| LL1572 |
110 : 110 ohms |
Digital audio |
| LL1573 |
110 : 110 + 110 ohms |
Digital audio splitting |
| LL1574 |
110 : 75 ohms |
Digital audio AES/EBU : SPDIF interface |
| LL1593 |
110 : 110 + 110 + 110 ohms |
Digital audio splitting |
|
Microphone Input Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1532 |
1+1:2 |
Mu metal core. Small size |
| LL1571 |
1+1 : 1.75+1.75 |
Mu metal core. Also useful for splitting |
| LL1528 |
1+1 : 2.5+2.5 |
Mu metal core. Pin compatible with LL1530 |
| LL1530 |
1+1 : 3.5+3.5 |
Mu metal core. |
| LL1538XL |
1 : 2.5+2.5 |
Mu metal core, very popular mic input transformer |
| LL1550 |
1+1+1+1 : 4+4 |
Amorphous core |
| LL1576 |
1+1 : 7 |
Mu metal core. Pin compatible with LL1538XL |
| LL1577 |
1+1 : 14 |
Mu metal core. Pin compatible with LL1538XL |
| LL1578XL |
1 : 5+5 |
Mu metal core |
| LL1587 |
1+1:4 |
Mu metal core, small size |
| LL1636 |
1+1+1+1 : 10+10 |
Amorphous core |
| LL1674 |
1+1 : 4+4 |
Amorphous core |
| LL1676 |
1+1 : 2+2 |
Amorphous core |
| LL1922 |
1+1 : 4+4 |
Mu metal core, similar to UTC HA-100X and LS-10X |
| LL1935 |
1+1 : 5+5 |
Mu metal core, excellent DI box transformer, as well. |
| LL1936 |
2:8, 3:8, 4:8, 6:8 |
Mu metal core |
| LL7903 |
1+1+1+1 : 2+2+2+2 |
Mu metal, high level mic input |
| LL7905 |
1+1+1+1 : 5.6+5.6 |
Mu metal, high level mic input |
|
Ribbon Microphone Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL2912 |
1+1+1+1 : 37 |
Amorphous amorphous core transformer, wire leads. |
| LL2913 |
1+1+1+1 : 37 |
Amorphous core transformer, PC mount |
| LL2914 |
1+1+1+1 : 37 |
mu-metal core transformer, PC mount |
| LL2915 |
1+1+1+1 :37 |
Mu-metal transformer, wire leads. |
| LL1927A |
1+1 : 55+55 |
amorphous core transformer, PC mount, intended for use with active buffer |
|
Microphone Output Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1940 |
9 : 1+1 |
Tube microphone output with “vintage” character |
|
General Purpose Transformers
|
Type
|
Turns Ratio
|
Usage/Comment
|
| LL1527 |
1+1 : 1+1 |
THE general purpose “600 ohm” transformer |
| LL1527XL |
1+1 : 1+1 |
THE general purpose “600 ohm” transformer |
| LL1570 |
1+1 : 1+1 |
Splitting transformer |
| LL1570XL |
1+1 : 1+1 |
Splitting transformer |
| LL1581XL |
1+1 : 1+1 |
Splitting transformer |
| LL1591 |
1+1 : 1+1 |
unshielded version of LL1527 |
