Hagerman Audio Labs PICCOLO2 User manual

PICCOLO2
JFET MC Headamp
Made in USA

PICCOLO2 JFET MC Headamp 2
Copyrights & Trademarks
 Copyright Hagerman Audio Labs 2014. All rights reserved. o part of this
document may be photocopied, reproduced, or translated to another language
without the prior written consent.
Disclaimer
The information contained in this document is subject to change without notice.
Hagerman Audio Labs shall not be liable for errors contained herein or for
consequential damages in connection with the furnishing, performance, or use of this
material.
Warranty
Hagerman Audio Labs warrants this product free of defects in materials and
workmanship for a period of 10 years. If you discover a defect, Hagerman Audio
Labs will, at its option, repair or replace the product at no charge to you provided
you return it during the warranty period, transportation charges prepaid to
Hagerman Audio Labs. This warranty does not apply if the product has been
damaged by negligence, accident, abuse or misuse or misapplication, has been
damaged because it has been improperly connected to other equipment or has been
modified without the express written permission of Hagerman Audio Labs. This
warranty is limited to the replacement or repair of this product and not to damage to
equipment of other manufacturers. Any applicable implied warranties, including
warranty of merchantability, are limited in duration to a period of the express
warranty as provided herein beginning with the original date of purchase and no
warranties, whether express or implied shall apply to the product thereafter. Under
no circumstances shall Hagerman Audio Labs be liable for any loss, direct, indirect,
incidental, special, or consequential damage arising out of or in connection with the
use of this product.
Hagerman Audio Labs
PO Box 61911
Honolulu, HI 96839
808-383-2704 (voice)
www.haglabs.com

PICCOLO2 JFET MC Headamp 3
Description
Congratulations, you have just purchased one of the highest performance-per-dollar
audiophile products available! The Piccolo2 is an MC headamp that provides a pre-
gain for your MM phonostage. The active circuitry uses low noise matched discrete
JFETs in a no-feedback gain and buffer configuration, offering very low noise and
distortion. The sound is extremely neutral leaving no sonic signature. Both loading
and gain are adjustable, providing extreme flexibility.
Specifications
Item pecification
Gain 0, 12, 20, 26 dB
Input Impedance 47, 100, 220, 470, 1k, 47k ohm
Output Impedance 300 ohm
Bandwidth 6Hz to 800kHz
Distortion <0.01% @1kHz
oise 85dB ref 0.5mV A-weighted (MC)
Size 3” x 5” x 1”
Power 120Vac / 240Vac 1W

PICCOLO2 JFET MC Headamp 4
Installation
Operation
The Piccolo2 installs between your MC cartridge and MM phonostage. Be sure to
connect turntable ground! Power is supplied by a small wall-wart style power supply.
It is best to use shielded interconnects to minimize hum induction.
Set the gain level to match your cartridge output level (see following table). Finally,
adjust resistive input loading to taste. Most MC carts run well at about 100 ohms.
WAR I G: Be careful when changing gain, as this causes audible “pops”. Turn
system volume down.
Cartridge Gain
<0.2mV 26dB
0.2mV to 0.6mV 20dB
0.6mV to 2mV 12dB
>2mV 0dB
Tro bleshooting
If the sound is not good, double-check all resistor values to make sure they were
installed into their correct locations.
Hum, buzz, and other noise sources (WiFi) can be induced into the Piccolo2 and/or
input cables via close proximity. Place as far from other equipment as possible.

VCC
VEE
J1 U1
TLE2426
L1 1mH
L2 1mH
C2 220uF C3 220uF
C1 100nF D2
LED R1 4k7 R2 4k7
R18 470 R19 470
Hagerman Audio Labs PO Box 61911 Honolulu, HI 96839
1
2 3

J2
R6 gain
J3
C7 100uF
C5 100nF C11
100uF
C9 100nF
R14 100 R16
100 R17 100
R15 100
C8 100uF C12
100uF
C6 100nF C10
100nF
VCC
VEE
C4 100nF
Q1A Q1B
R3 load
R4 22R R5
22R
R7 10k R8
10k
R9 4.7k R10
4.7k
R11 220k
Q2A R12 220 Q2B R13 220
Hagerman Audio Labs PO Box 61911 Honolulu, HI 96839
25V